7th grade august 20th, 2010

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7th grade august 20th, 2010

  1. 1. Friday, August 20th<br />Warm-up:<br />What are the steps of the scientific method?<br />Homework: Project brainstorm<br />
  2. 2. Answers to warm-up<br />Question<br />Observe/ research<br />Hypothesis<br />Experiment<br />Results<br />Conclusion<br />Communicate the Results<br />Questions?!?<br />
  3. 3. Get a red textbook<br />
  4. 4. What is Technology?<br />The products and processes that help us get our needs.<br />The tools and methods for creating products and processes<br />Any product, process, or knowledge that is created when a need is met<br />(computer, coffee maker, hearing aide)<br />
  5. 5. Interactive notebook pg. 5<br />Write the following questions<br />What are three types of models used by scientists?<br />What are some ways scientists use models?<br />How do models differ from the object it represents?<br />What is the difference between a theory and a law?<br />Can theories change?<br />
  6. 6. Scientific Models<br />What is a model?<br />A model is something that scientists use to represent an object or process<br />Ex: Cells, Human body, buildings<br />There are Three Types of models<br /> Physical Models<br /> Mathematical Models<br /> Conceptual Models<br />
  7. 7. Physical Model<br />This type of model you can touch and see. For example a model of the solar system.<br />
  8. 8. Mathematical Model<br />A mathematical model is made up of mathematical equations and data.<br />Weathermen use this type of modeling with computers to make weather predictions<br />
  9. 9. Conceptual model<br />A conceptual model is used to help explain ideas. Ex. Animal Behavior<br />Scientists use conceptual models to predict how an animal will behave.<br />
  10. 10. What are some differences between models and the real objects?<br />Size – solar system made smaller<br /> cells are made larger<br />Strength – dinosaur models will never tell how strong they were.<br />
  11. 11. How are models helpful?<br />Models can be used to help explain theories.<br />A theory explains why something happens and what will happen in the future. It is based on observation and testing.<br />Theories can be proven wrong new theories can be made.<br />
  12. 12. Scientific Laws<br />When a theory and a model correctly predict the results of many different experiments the theory is considered a law.<br />i.e THE LAW OF GRAVITY<br />If I throw something in the air, it will come back down every time.<br />
  13. 13. I.N. Intro to Engineering<br />
  14. 14. Ask<br />What is the problem?<br />What have others done?<br />What are the constraints?<br />
  15. 15. Imagine<br />What are some solutions?<br />Brainstorm ideas.<br />Choose the best one.<br />
  16. 16. Plan<br />Draw a diagram.<br />Make lists of materials you will need.<br />Make a prototype – or model - <br />
  17. 17. Create<br />Follow your plan and create it.<br />Test it out!<br />
  18. 18. Improve<br />Talk about what works, what doesn't, and what could work better.<br />Modify your design to make it better.<br />Test it out!<br />
  19. 19. http://pbskids.org/designsquad/season3/index.html<br />
  20. 20. Design a rollercoaster<br />http://www.learner.org/interactives/parkphysics/coaster/<br />
  21. 21. Negative effects of Technology<br />Pollution from large factories<br />CFC’s, were introduced to clean the environment, but actually made it worse<br />Can you think of others?<br />
  22. 22. What is Bioengineering?<br />Engineering things to help plants, animals, and people.<br />2 types of bioengineering<br />
  23. 23. Interactive notebook pg. 4 bottom<br />
  24. 24. Assistive<br />These technologies are developed to help organisms without changing them<br />Ex: contact lenses, hearing aides, crutches, canes.<br />
  25. 25. Adaptive<br />Adaptive technologies change the living organism<br />Ex. Artificial skin, which heals wounds faster<br />Ex. Changing DNA.<br />
  26. 26. Video<br />http://spectrum.ieee.org/video/biomedical/bionics/dean-kamens-artificial-arm<br />
  27. 27. Project<br />Working with a group of 2 or 3<br />Create an assistive or adaptive bioengineered product.<br />You need to answer the following questions and attach them to your poster board.<br />What the product is called?<br />What is does?<br />Who/What will use it?<br />How will you test it?<br />

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