Lab safety
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Students should queue quietly outside the classroom door until instructed to enter, store bags under desks, and follow safety procedures like wearing protective equipment and not eating or drinking during practical work. They should also report any issues, follow all instructions carefully, and enjoy learning through experiments.
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Lab safety[1]
Students should queue quietly outside the classroom until instructed to enter, store bags under desks, and follow safety procedures like wearing glasses and not touching equipment without permission during science experiments to prevent injuries from flammable or breakable materials.
Lab safety rules ppp wiki
Wear goggles and gloves to protect your eyes and hands from potential hazards in the lab. Do not put anything in your mouth or touch anything hot unless your teacher instructs you to do so for an experiment, as these actions could endanger your health and safety.
Lab safety ppt
This document outlines basic laboratory safety procedures. It instructs students to know the dangers and proper use of all materials before beginning any exercise. Personal protective equipment like lab coats and gloves should be worn properly. Emergency procedures like eyewash stations and safety showers are identified for chemical exposure. Accidents and injuries should be reported immediately to the instructor. Good conduct includes following all instructions and not bringing food or drinks into the lab. Workbenches and equipment must be cleaned before leaving the laboratory.
Lab safety
The document outlines the importance of safety in the science lab, noting that safety is the number one priority and that everyone is responsible for following the rules. It provides an overview of general safety guidelines, safety symbols, safety equipment, examples of unsafe situations, and what to do in an emergency. Students must sign a safety contract and study for a safety quiz to demonstrate their understanding of the lab safety procedures.
Science lab rules
The document outlines several safety rules for students to follow when conducting experiments in a science laboratory. Key rules include: only operating equipment with teacher permission, tying back long hair, reading all labels and instructions carefully before handling any chemicals or equipment, never tasting or smelling chemicals, keeping hands away from face while using lab materials, and leaving the work station clean after finishing. Safety is the top priority, and students must follow all instructions given by the teacher.
Lab saftey
The document outlines key aspects of lab safety, including defining a laboratory, safety, and lab safety. It discusses potential hazards in labs like physical, chemical, infectious, electrical, and radiation dangers. The document emphasizes the importance of personal protective equipment, safe chemical handling, emergency procedures, and first aid for minor injuries. Following lab safety guidelines is essential to protect oneself and others from danger, risk, or injury while working in the laboratory.
Science Safety
This document outlines safety procedures and responsibilities for a science classroom. It states that safety is everyone's responsibility. Teacher responsibilities include providing safe activities and equipment, as well as safety instructions. Student responsibilities include following all instructions, reading safety materials, and asking questions when confused. Various hazards are described such as chemicals, fire, electricity, animals, and plants. Students must sign a safety contract agreeing to follow safety protocols, and consequences are outlined for breaking the contract.
Labsafetypresentation
- Always wear safety goggles or glasses, a lab apron, and follow proper clothing guidelines like closed-toed shoes and tying back long hair when in the chemistry lab.
- Never work alone in the lab and only conduct experiments under a teacher's supervision.
- Follow all safety precautions, such as reading labels and instructions carefully, knowing the locations and operations of safety equipment like eyewash stations and safety showers, and reporting any accidents immediately to the teacher.
Recommended
Lab safety[1]
Students should queue quietly outside the classroom until instructed to enter, store bags under desks, and follow safety procedures like wearing glasses and not touching equipment without permission during science experiments to prevent injuries from flammable or breakable materials.
Lab safety rules ppp wiki
Wear goggles and gloves to protect your eyes and hands from potential hazards in the lab. Do not put anything in your mouth or touch anything hot unless your teacher instructs you to do so for an experiment, as these actions could endanger your health and safety.
Lab safety ppt
This document outlines basic laboratory safety procedures. It instructs students to know the dangers and proper use of all materials before beginning any exercise. Personal protective equipment like lab coats and gloves should be worn properly. Emergency procedures like eyewash stations and safety showers are identified for chemical exposure. Accidents and injuries should be reported immediately to the instructor. Good conduct includes following all instructions and not bringing food or drinks into the lab. Workbenches and equipment must be cleaned before leaving the laboratory.
Lab safety
The document outlines the importance of safety in the science lab, noting that safety is the number one priority and that everyone is responsible for following the rules. It provides an overview of general safety guidelines, safety symbols, safety equipment, examples of unsafe situations, and what to do in an emergency. Students must sign a safety contract and study for a safety quiz to demonstrate their understanding of the lab safety procedures.
Science lab rules
The document outlines several safety rules for students to follow when conducting experiments in a science laboratory. Key rules include: only operating equipment with teacher permission, tying back long hair, reading all labels and instructions carefully before handling any chemicals or equipment, never tasting or smelling chemicals, keeping hands away from face while using lab materials, and leaving the work station clean after finishing. Safety is the top priority, and students must follow all instructions given by the teacher.
Lab saftey
The document outlines key aspects of lab safety, including defining a laboratory, safety, and lab safety. It discusses potential hazards in labs like physical, chemical, infectious, electrical, and radiation dangers. The document emphasizes the importance of personal protective equipment, safe chemical handling, emergency procedures, and first aid for minor injuries. Following lab safety guidelines is essential to protect oneself and others from danger, risk, or injury while working in the laboratory.
Science Safety
This document outlines safety procedures and responsibilities for a science classroom. It states that safety is everyone's responsibility. Teacher responsibilities include providing safe activities and equipment, as well as safety instructions. Student responsibilities include following all instructions, reading safety materials, and asking questions when confused. Various hazards are described such as chemicals, fire, electricity, animals, and plants. Students must sign a safety contract agreeing to follow safety protocols, and consequences are outlined for breaking the contract.
Labsafetypresentation
- Always wear safety goggles or glasses, a lab apron, and follow proper clothing guidelines like closed-toed shoes and tying back long hair when in the chemistry lab.
- Never work alone in the lab and only conduct experiments under a teacher's supervision.
- Follow all safety precautions, such as reading labels and instructions carefully, knowing the locations and operations of safety equipment like eyewash stations and safety showers, and reporting any accidents immediately to the teacher.
Anna.Laboratorysafety
The document discusses key safety rules for students to follow in the laboratory to ensure their safety and the safety of others. It outlines five main rules: 1) no horsing around, 2) always wear goggles and a safety apron, 3) tie back long hair and loose clothing near open flames, 4) never directly inhale vapors, and 5) be familiar with emergency equipment. Following these rules helps prevent injuries from accidents and ensures a safe laboratory experience.
Lab safety rules and symbols Summary
The most dangerous thing in any laboratory is someone who doesn't know what they are doing. The document outlines many important lab safety rules regarding personal protective equipment, chemical handling, fire safety, first aid procedures, and cleanup. Key safety symbols are explained, such as wearing goggles and gloves when handling hot materials or chemicals. Proper disposal methods and treating animals and plants with care are also emphasized.
Lab Safety
The document outlines various safety rules and procedures for working in a science laboratory. Students should wear safety goggles and protective clothing when handling chemicals or using heat sources. Any accidents or spills should be immediately reported to the teacher. Glassware should be handled carefully and broken pieces disposed of properly. Chemicals require specific handling procedures and should not be mixed without instruction. Electrical equipment needs to be used carefully and unplugged after use. Basic first aid procedures are described for common lab injuries like burns, cuts, and eye injuries.
Lab+safety+rules+ppt
1) Students must follow all lab safety rules and conduct themselves responsibly in the lab at all times. This includes no running, horseplay, or pushing.
2) Students must carefully follow all written and verbal instructions, asking the teacher for help if anything is unclear.
3) Proper protective equipment like safety goggles and lab coats should be worn during experiments with chemicals or hazardous substances. Long hair should be tied back and loose clothing secured.
Safety in the Science Lab
This is the presentation teachers reviewed with students the first week of school. We adapted this through our discussion to fit our elementary lab environment.
Lab Saftey
This document outlines safety procedures for a wet chemistry lab. It discusses general safety rules including thinking before starting work, never working alone, and wearing proper protective equipment. Specific safety tips are provided for glassware, chemicals, electricity, heating, and first aid. Hazardous materials are identified and proper handling of chemicals, waste disposal, and emergency responses are covered. The document emphasizes preparing for safety, knowing locations of emergency equipment, cleaning up work areas, and immediately reporting any accidents.
Science safety
The document outlines several safety guidelines for science labs including:
1) Read all instructions and ask for help if anything is unclear before beginning any lab. If uncomfortable with any procedure, do not do it.
2) Clean up any messes immediately and keep the lab area clean and clear of clutter.
3) Handle all chemicals properly by avoiding contact and inhalation, and always wearing gloves and goggles.
4) In case of fire, notify the teacher and use a fire blanket or extinguisher. If on fire, stop, drop and roll.
Chem Hapg1 Lab Safety Powerpoint
This document provides safety guidelines and instructions for high school chemistry laboratory work. It outlines proper personal protective equipment like safety goggles and closed-toe shoes. It describes safe handling of chemicals like acids and bases as well as emergency equipment like fire extinguishers, fire blankets, eyewash stations, and first aid kits. Specific safety procedures are given for working with glassware, Bunsen burners, and other lab equipment. Horseplay and unauthorized experiments are strongly discouraged.
UNDERSTANDING SAFETY IN SCIENCE LAB
This lesson was designed for students using the science lab for the very first time. Focus is on Hazards, Lab rules and the importance of listening skills and following instructions to avoid accident and lab incidents.
Thanks
Ivan
Science safety
Safety is the top priority for all students and teachers in the science classroom. The document outlines responsibilities for teachers to provide safe instruction and equipment, and responsibilities for students to follow all safety procedures, such as wearing goggles and asking questions if confused. General safety tips are provided for various hazards like fire, electricity, chemicals, and living organisms. To participate in labs, students must sign a safety contract agreeing to follow all safety rules and instructions.
Lab safety symbols & definition
This document provides safety rules and guidelines for a science laboratory. It discusses the importance of knowing safety symbols, exercising caution, wearing proper protective equipment like goggles and closed-toe shoes, handling chemicals and equipment carefully, keeping work areas clean and organized, and reporting any accidents or injuries immediately. Specific guidelines are given for electrical, heating, cutting, chemical, biological, and other hazards that may be present in a lab. Students are instructed to never engage in horseplay, eat or drink in the lab, or remove chemicals from the classroom.
Lab safety good ppt
1) Laboratory safety rules outline proper procedures and protective equipment to prevent accidents, such as wearing safety goggles and closed-toe shoes.
2) Students should exercise caution, follow all instructions, and notify the teacher of any issues.
3) To protect themselves, students must wear proper attire, use equipment carefully, and handle chemicals, heat sources, and sharp objects appropriately.
Safety Show
The document provides safety instructions for various lab equipment and situations. It lists safety precautions for using goggles, eye wash stations, gloves, fire extinguishers, fire blankets, handling glass and sharp objects, working with chemicals including chemical spills, electrical safety, animal handling, first aid, and general lab rules. Students are instructed to study the safety materials, handle equipment carefully, follow all rules and instructions, and alert teachers to any accidents or issues.
Lab safety summary
Lab safety is important to follow directions and prevent injuries. Learning these rules will help the student be safe in labs now and in the future when using chemicals or other equipment. Other situations like handling cleaning supplies and hot oven items at home also require safety precautions to properly dispose of materials and prevent burns.
Chemistry laboratory safety rules
The document outlines several important safety rules for students to follow when conducting experiments in a chemistry laboratory. Students must wear appropriate eye protection, protective clothing, and closed-toe shoes at all times in the lab. Dangerous activities like eating, drinking, applying cosmetics and tasting chemicals are prohibited. Students must also follow proper procedures when handling chemicals, equipment and heat sources to avoid accidents and injuries. Before leaving the lab, students must clean up their work areas and dispose of any waste properly.
Laboratory Rules And Safety Guidelines For Students
This document outlines safety rules and procedures for a science laboratory class. It discusses the importance of safety, provides a student safety contract to be signed, and lists rules covering personal safety when handling chemicals and equipment, cleanliness and orderliness, and accurately recording results. Specific safety tips are given for handling glassware, chemicals, heat sources, and what to do in case of accidents or broken equipment. Students are provided with a quiz to test their understanding of the safety instructions.
Lab Safety.pptx
This document outlines important safety procedures and guidelines for science labs and field work. It emphasizes being responsible for your own safety and others by knowing safety rules. Personal protective equipment like safety goggles and closed-toe shoes are required in labs. Hazards like chemicals, glassware, electricity, fire and animals require specific safety protocols. Labs must be kept neat and clean and any accidents or injuries reported immediately.
Lab safety by dr. Ashok kumar j
The document provides guidance on laboratory safety. It emphasizes the importance of following safety precautions to avoid accidents from hazards in the laboratory. Some key safety rules include wearing protective equipment like goggles and aprons, tying back long hair, avoiding loose clothing, not eating or drinking in the lab, washing hands after handling chemicals, asking the teacher if unsure of anything, and notifying the teacher immediately if any accidents occur.
Lab safety2
1) The document discusses lab safety rules for a science classroom, emphasizing that safety is the top priority. It outlines general safety guidelines including being responsible, following instructions, and not eating or drinking in the lab.
2) Specific chemical safety guidelines are provided around glassware, chemicals, heat, and not mixing unauthorized substances. Common safety symbols are also explained.
3) Emergency procedures and safety equipment like fire blankets and extinguishers are indicated, with students expected to learn how to properly use an extinguisher. Identification of unsafe photo examples is assigned as an activity.
Importance of Safety, Health and Environmental Concepts in the Chemical Labor...
Major chemical laboratory accidents can result in fatalities, injuries, environmental damage, property damage, evacuations, business losses, and fines or lawsuits. To prevent such outcomes, laboratory safety policies and procedures must be established to address hazards like exposure to chemicals and laboratory equipment. These policies should cover general safety rules, glassware handling, chemical storage and handling, safety equipment, emergency response plans, and safety inspections. Proper training is also important so that employees know how to safely handle chemicals, glassware, and equipment and use safety equipment appropriately.
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This document provides guidance on writing a white paper using structured authoring. It discusses the importance of document design and consistency in enforcing a company's brand. Structured authoring uses software to enforce style rules and organize content into reusable components. Writers must complete a series of steps in the software before a document can be published. The document then provides an example structure for a white paper, outlining sections like introduction, methods, results/discussion, and conclusion. It offers tips for writing each section, including starting the introduction with either the background or purpose, and describing the research methodology and findings according to an organizing framework.
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Anna.Laboratorysafety
The document discusses key safety rules for students to follow in the laboratory to ensure their safety and the safety of others. It outlines five main rules: 1) no horsing around, 2) always wear goggles and a safety apron, 3) tie back long hair and loose clothing near open flames, 4) never directly inhale vapors, and 5) be familiar with emergency equipment. Following these rules helps prevent injuries from accidents and ensures a safe laboratory experience.
Lab safety rules and symbols Summary
The most dangerous thing in any laboratory is someone who doesn't know what they are doing. The document outlines many important lab safety rules regarding personal protective equipment, chemical handling, fire safety, first aid procedures, and cleanup. Key safety symbols are explained, such as wearing goggles and gloves when handling hot materials or chemicals. Proper disposal methods and treating animals and plants with care are also emphasized.
Lab Safety
The document outlines various safety rules and procedures for working in a science laboratory. Students should wear safety goggles and protective clothing when handling chemicals or using heat sources. Any accidents or spills should be immediately reported to the teacher. Glassware should be handled carefully and broken pieces disposed of properly. Chemicals require specific handling procedures and should not be mixed without instruction. Electrical equipment needs to be used carefully and unplugged after use. Basic first aid procedures are described for common lab injuries like burns, cuts, and eye injuries.
Lab+safety+rules+ppt
1) Students must follow all lab safety rules and conduct themselves responsibly in the lab at all times. This includes no running, horseplay, or pushing.
2) Students must carefully follow all written and verbal instructions, asking the teacher for help if anything is unclear.
3) Proper protective equipment like safety goggles and lab coats should be worn during experiments with chemicals or hazardous substances. Long hair should be tied back and loose clothing secured.
Safety in the Science Lab
This is the presentation teachers reviewed with students the first week of school. We adapted this through our discussion to fit our elementary lab environment.
Lab Saftey
This document outlines safety procedures for a wet chemistry lab. It discusses general safety rules including thinking before starting work, never working alone, and wearing proper protective equipment. Specific safety tips are provided for glassware, chemicals, electricity, heating, and first aid. Hazardous materials are identified and proper handling of chemicals, waste disposal, and emergency responses are covered. The document emphasizes preparing for safety, knowing locations of emergency equipment, cleaning up work areas, and immediately reporting any accidents.
Science safety
The document outlines several safety guidelines for science labs including:
1) Read all instructions and ask for help if anything is unclear before beginning any lab. If uncomfortable with any procedure, do not do it.
2) Clean up any messes immediately and keep the lab area clean and clear of clutter.
3) Handle all chemicals properly by avoiding contact and inhalation, and always wearing gloves and goggles.
4) In case of fire, notify the teacher and use a fire blanket or extinguisher. If on fire, stop, drop and roll.
Chem Hapg1 Lab Safety Powerpoint
This document provides safety guidelines and instructions for high school chemistry laboratory work. It outlines proper personal protective equipment like safety goggles and closed-toe shoes. It describes safe handling of chemicals like acids and bases as well as emergency equipment like fire extinguishers, fire blankets, eyewash stations, and first aid kits. Specific safety procedures are given for working with glassware, Bunsen burners, and other lab equipment. Horseplay and unauthorized experiments are strongly discouraged.
UNDERSTANDING SAFETY IN SCIENCE LAB
This lesson was designed for students using the science lab for the very first time. Focus is on Hazards, Lab rules and the importance of listening skills and following instructions to avoid accident and lab incidents.
Thanks
Ivan
Science safety
Safety is the top priority for all students and teachers in the science classroom. The document outlines responsibilities for teachers to provide safe instruction and equipment, and responsibilities for students to follow all safety procedures, such as wearing goggles and asking questions if confused. General safety tips are provided for various hazards like fire, electricity, chemicals, and living organisms. To participate in labs, students must sign a safety contract agreeing to follow all safety rules and instructions.
Lab safety symbols & definition
This document provides safety rules and guidelines for a science laboratory. It discusses the importance of knowing safety symbols, exercising caution, wearing proper protective equipment like goggles and closed-toe shoes, handling chemicals and equipment carefully, keeping work areas clean and organized, and reporting any accidents or injuries immediately. Specific guidelines are given for electrical, heating, cutting, chemical, biological, and other hazards that may be present in a lab. Students are instructed to never engage in horseplay, eat or drink in the lab, or remove chemicals from the classroom.
Lab safety good ppt
1) Laboratory safety rules outline proper procedures and protective equipment to prevent accidents, such as wearing safety goggles and closed-toe shoes.
2) Students should exercise caution, follow all instructions, and notify the teacher of any issues.
3) To protect themselves, students must wear proper attire, use equipment carefully, and handle chemicals, heat sources, and sharp objects appropriately.
Safety Show
The document provides safety instructions for various lab equipment and situations. It lists safety precautions for using goggles, eye wash stations, gloves, fire extinguishers, fire blankets, handling glass and sharp objects, working with chemicals including chemical spills, electrical safety, animal handling, first aid, and general lab rules. Students are instructed to study the safety materials, handle equipment carefully, follow all rules and instructions, and alert teachers to any accidents or issues.
Lab safety summary
Lab safety is important to follow directions and prevent injuries. Learning these rules will help the student be safe in labs now and in the future when using chemicals or other equipment. Other situations like handling cleaning supplies and hot oven items at home also require safety precautions to properly dispose of materials and prevent burns.
Chemistry laboratory safety rules
The document outlines several important safety rules for students to follow when conducting experiments in a chemistry laboratory. Students must wear appropriate eye protection, protective clothing, and closed-toe shoes at all times in the lab. Dangerous activities like eating, drinking, applying cosmetics and tasting chemicals are prohibited. Students must also follow proper procedures when handling chemicals, equipment and heat sources to avoid accidents and injuries. Before leaving the lab, students must clean up their work areas and dispose of any waste properly.
Laboratory Rules And Safety Guidelines For Students
This document outlines safety rules and procedures for a science laboratory class. It discusses the importance of safety, provides a student safety contract to be signed, and lists rules covering personal safety when handling chemicals and equipment, cleanliness and orderliness, and accurately recording results. Specific safety tips are given for handling glassware, chemicals, heat sources, and what to do in case of accidents or broken equipment. Students are provided with a quiz to test their understanding of the safety instructions.
Lab Safety.pptx
This document outlines important safety procedures and guidelines for science labs and field work. It emphasizes being responsible for your own safety and others by knowing safety rules. Personal protective equipment like safety goggles and closed-toe shoes are required in labs. Hazards like chemicals, glassware, electricity, fire and animals require specific safety protocols. Labs must be kept neat and clean and any accidents or injuries reported immediately.
Lab safety by dr. Ashok kumar j
The document provides guidance on laboratory safety. It emphasizes the importance of following safety precautions to avoid accidents from hazards in the laboratory. Some key safety rules include wearing protective equipment like goggles and aprons, tying back long hair, avoiding loose clothing, not eating or drinking in the lab, washing hands after handling chemicals, asking the teacher if unsure of anything, and notifying the teacher immediately if any accidents occur.
Lab safety2
1) The document discusses lab safety rules for a science classroom, emphasizing that safety is the top priority. It outlines general safety guidelines including being responsible, following instructions, and not eating or drinking in the lab.
2) Specific chemical safety guidelines are provided around glassware, chemicals, heat, and not mixing unauthorized substances. Common safety symbols are also explained.
3) Emergency procedures and safety equipment like fire blankets and extinguishers are indicated, with students expected to learn how to properly use an extinguisher. Identification of unsafe photo examples is assigned as an activity.
Importance of Safety, Health and Environmental Concepts in the Chemical Labor...
Major chemical laboratory accidents can result in fatalities, injuries, environmental damage, property damage, evacuations, business losses, and fines or lawsuits. To prevent such outcomes, laboratory safety policies and procedures must be established to address hazards like exposure to chemicals and laboratory equipment. These policies should cover general safety rules, glassware handling, chemical storage and handling, safety equipment, emergency response plans, and safety inspections. Proper training is also important so that employees know how to safely handle chemicals, glassware, and equipment and use safety equipment appropriately.
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The document discusses homeostasis and how organ systems work together to maintain it. It provides examples of how disrupting homeostasis can damage the body over long periods of time compared to short periods. It also explains how giving insulin to people with type 1 diabetes restores their glucose homeostasis and how living in Alaska could impact calcium and phosphorus levels due to changes in vitamin D exposure between winter and summer. Finally, it discusses potential evolutionary advantages of animals being able to store more glucose in the form of glycogen.
Formative assessment 28.2
This document discusses homeostasis and feedback mechanisms in the human body. It contains 5 multiple choice questions and answers:
1. It identifies the 4 main parts of a homeostatic system as sensors, control centers, communication systems, and targets. Each part has a specific function to maintain homeostasis.
2. Negative feedback loops work to return the body to its set point by counteracting changes, while positive feedback loops accelerate changes away from the set point.
3. Nursing creates a positive feedback loop that causes the mother's body to produce milk. If she bottle feeds instead, this stimulus is eliminated and her milk supply will decrease.
4. On a hot hike, negative feedback loops like sweating and increased blood
Grade 12 lesson 5 the nervous system
Here is the completed reflex arc:
When you stand on a pin, the pain sensor sends an electrical impulse along the sensory neuron. This is passed across a synapse as a chemical and processed in the CNS in a relay neuron. It is passed across another synapse and through the motor neuron as an electrical impulse. This causes the muscle to move away from the pin. It is an involuntary response.
CNS motor synapse electrical involuntary sensor
Grade 12 lesson 6 the brain and its functions
The somatic nervous system controls voluntary actions like moving your arm. The autonomic nervous system controls involuntary actions like digestion. The sympathetic nervous system prepares the body for action like increased heart rate during stress. The parasympathetic nervous system calms the body during relaxation like slowing the heart rate.
Grade 12 lesson 4 interaction among systems
The document discusses interactions among organ systems and how disruption of homeostasis can occur. It provides examples of thermoregulation, which requires interaction between the skin, muscles, circulatory, endocrine, nervous and respiratory systems. Disruption of homeostasis can be short term, like a cold virus, or long term, like diabetes where the pancreas fails to control blood glucose levels over time.
Classroom rules
This document outlines 12 classroom rules for students to follow, including speaking only when it's their turn, staying seated unless necessary, asking permission before leaving the classroom, using an indoor voice, speaking in English, treating others with respect, not using mobile phones or eating in class, following instructions, underlining dates and titles, and keeping work presentable.
Lab safety pic
This document provides instructions for students to identify safety issues in their lab, pair each issue with a relevant safety rule, and design a poster highlighting one rule and its importance.
Grade 12 lesson 1 intro slideshare
This document provides information about plant and animal cells. It begins with defining a cell and then labels the structures of plant and animal cells such as the nucleus, mitochondria, chloroplasts, and cell wall. It explains the roles of each structure and compares plant and animal cells in a Venn diagram. The key differences are that plant cells have a cell wall, chloroplasts, and a large permanent vacuole while animal cells do not. The document also discusses cell organization and the differences between prokaryotic and eukaryotic cells.
Grade 12 lesson 2 levels of organisation
The document discusses the five levels of organization in the human body: cells, tissues, organs, organ systems, and the organism. It explains that cells are the basic unit and become specialized through determination and differentiation. Groups of similar cells form tissues like epithelial, connective, muscle and nervous tissue. Organs are formed from different tissue types working together. Organ systems consist of two or more organs working as a unit, and together the organ systems make up the entire organism. Major organ systems are named and their tissues and functions briefly outlined.
Grade 12 lesson 3 homeostasis
Homeostasis refers to maintaining stable internal conditions despite external changes. The body uses control systems involving sensors, control centers, communication systems, and targets to regulate conditions like temperature, blood glucose, and blood pressure through negative and positive feedback loops. Most functions use negative feedback loops, which reverse changes to return the body to its set points. Positive feedback increases the rate of change away from set points when a rapid response is needed, such as during blood clotting or puberty.
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Lab safety
- 2. Queue quietly outside the door until your teacher tells you to enter and keep the doorway clear.
- 3. Put your bag underneath the desk
- 4. Be quiet and sensible during practical work and never run.
- 5. Do not touch any apparatus until told.
- 6. Wear safety glasses when told.
- 7. Follow the rules when using a Bunsen burner
- 8. Report any breakage, spillage or injury immediately
- 9. Tie long hair back during practical work
- 10. Do not eat or drink in a laboratory
- 11. Listen to/ read instructions carefully
- 12. Above all, enjoy discovering new things!