Science laboratory its uses and functions are described in detail

1. LABORATORY
Dr. Harikrishnan M & Brenna Sunny
CPAS CTE NEDUMKANDAM

2. What is laboratory?
It is a facility that provide controlled
conditions in which scientific or
technological research,experiments and
measurements may be performed.

3. FUNCTIONS OF LABORATORY
• Makes students familiar with equipments and terminology
used in science.
• To understand the underlying principles/theories behind
experimental data.
• To train students in analysis of data and its presentation in
tables and graphs.
• To give students experience of working in teams.
• To train students in experimental methods.
• To encourage deep understanding in children.
• Helps in the development of manipulative skills.

4. • Get a chance for activity and thus promotes learning by doing.
• Train pupil in scientific thinking,scientific attitudes and
scientific methods.
• The experiments done are a source of motivation.
• Teachers come into closer contact with students and help
them to bring out of their difficulties.
FUNCTIONS OF LABORATORY Contd..

5. FUNCTIONS OF LABORATORY Contd..
• Modern science are mainly based on
application of experimental method. It is in
the laboratory pupils get a training in this.
• It deepens the students understanding that
scientific concepts and application are closely
related to his natural environment.
• Pupil get a first hand learning experience.

6. OBJECTIVES ACHIEVED THROUGH THE USE
OF LABORATORY
Five group of objectives
• Skills
• Concepts
• Cognitive abilities
• Understanding the nature of science
• Attitudes

7. General principles of laboratory
construction
• Should be compact in arrangement.
• Fittings and furniture should be convenient and economical.
• There must be enough storage accomodation and sufficient
wall space

8. LABORATORY ROOMS
Large rooms with sufficient sunlight,
lightings and ventilations.
Doors and windows should open outwards.
Other neccessities include working
benches, demonstration tables, sink,
blackboard, almirah, bottle shelves, waste
boxes etc..

9. Selection and purchase of things for
laboratory
 The list of apparatus may be divided into two:
• Essentials
• Desirables
 In ordering goods, full specifications of the articles
should be given
 After finalising list the teacher will invite quotations
from science firm.

10. Economy in the laboratory
• Money should be spent for purchasing only
those things used in laboratory.
• Only good type of apparatus of glass should
be bought
• Pupil should not damage apparatus through
carelessness or ignorance

11. Laboratory rules
• No pupil is allowed to enter lab in the absence of teacher.
• Every pupil must have a seat assigned to him.
• Unnecessary talking is forbidden.
• Bottles must be labeled clearly.
• Reagent bottles should be
returned to shelves after use.

12. Take care while handling
• Glasses, acids , strong alkalies
• Gases like H2S, SO2, CL2 and CO
• Salts of lead, mercury and zinc
• Explosive materials

13. Accidents in Laboratory and First Aid
• Wounds - Apply cotton dipped in tincture iodine
• Burns from fire - Cover the portion with linen dipped in
vaseline
• Burns from acids - Wash with water and then with 1% sodium
bicarbonate solution
• Injuries to eye - Should dealt with doctor
• Burns from alkalies - Wash with water and then with weak
vinegar or lime juice

14. Precautions while doing practical's
• Laboratory glass ware must be never used as drinking vessels.
• Solutions split on the bench or floor should be cleaned
immediately.
• Do not look in the mouth of a test tube while heating its
contents.
• Always use test tube while heating.
• Do not point to other people with a test tube.

15. Registers in laboratory
• Permanent stock register
It contain details of article which are not
consumed or broken like magnets, iron stands,
wooden blocks etc..

16. • Consumable stock register
It includes chemicals and other fluids that can be
consumed such as acids, alcohol, distilled water etc..
Registers in laboratory

17. Registers in laboratory
• Requirement register
The most appropriate method of
collecting suggestions for new resources is to
note in requirement register.

18. Registers in laboratory
• Order register
It includes records of orders send for the
purchase of new apparatus.

19. Registers in laboratory
• Breakable stock register
Includes breakable articles like test tubes, beakers,
pipettes, funnels etc..