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Exploring Work and Machines Through Interactive Activities

Engage students in hands-on activities to explore work, inclined planes, levers, power calculation, and quiz challenges related to simple machines. Experiment, analyze data, and draw conclusions to understand work concepts better. Learn about mechanical advantage, power, and applying forces through various practical tasks. Foster critical thinking and observational skills in a dynamic learning environment.

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Exploring Work and Machines Through Interactive Activities

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  1. In: 10.4.10 Work • Obj: We will do various activities to determine if work is being done. • TEK: 7.7A • Warm up: What is the SI unit you need to measure the length of the football field?

  2. Questions: • How can we determine if work is happening?

  3. Research: • Work = Force X Distance

  4. Hypothesis: • If… then work is being done Because…

  5. Experiment: • Go to each stations. Complete the activity, and record if what you did was work or not • DATA CHART:

  6. Analysis: • Which station do you think you did the most work at? • Explain why that station was the most work. • What is 0 times any other number? 4. If work is Forces times Distance, if you didn’t move anything did you do work?

  7. Conclusion:write in your Summary Explain why no matter how much force you apply on a non-moving object you are not doing work.

  8. Steps to Calculating work • Identify the numbers with their units. • Determine if the unit tells you if it is force, distance, or work • Put the numbers in the correct place in the equations W= F x D • Solve

  9. Recall: an object in which the force is applied must be moving to be work. • Summary (was your conclusion) • Out: Draw a picture of work, and write a sentence explaining how the picture demonstrates work being done.

  10. In: 10.5 inclined plane • OBJ: We will use a simple machine to show how work is not changed but effort is changed. • TEK: 7.7A • Warm-up: What tools would be needed if George wanted to test how much space a rubber ball takes up.

  11. Question: • Will an inclined plane reduce the amount of work needed to move an object.

  12. Research • Inclined plane: a simple machine with a flat slanted edge (a ramp) • Video Clip

  13. Hypothesis: • If I use an incline plane to …. then work … because…

  14. Experiment: • Create the chart:

  15. Analysis • How much work was done to lift the object straight up? • How much work was done to drag the object up the inclined plane. • Which one do you think would be easier to do if the object was 200 lbs? • Is there a difference between work and effort?

  16. Conclusion WRITE in your Summary Tell me if your hypothesis is valid or invalid. Explain why!

  17. Recall: Effort = force not work • Summary : (conclusion) • Out: Explain how Egyptians used an incline plane to build the pyramids.

  18. 10.6.10 Levers • Obj: We will calculate how efficient a lever is using a ruler. • TEK: 7.7 A • Warm up: Which picture is doing work… explain why.

  19. Question: • can we increase the mechanical advantage of a lever?

  20. Research: • Lever: a simple machine that has a bar balanced on a single point called a fulcrum. • Video clip: levers and mechanical advantage. • Mechanical advantage=length of effort arm ÷ length of resistance arm

  21. Hypothesis: • If I change…. then I will increase the…. Because…

  22. Experiment: • Create the chart • Calculate the mechanical advantage.

  23. Analysis: • Which lever in this lab had the greatest mechanical advantage? • Do you think you can change the mechanical advantage of a lever?

  24. Conclusion WRITE in your Summary Tell me if your hypothesis is valid or invalid. Explain why!

  25. Recall: Mechanical Advantage = effort forceresistance force • Summary: Conclusion • Out: Draw and label each class of lever

  26. 10.7 Power • Obj: we will calculate the amount of power and review by assessment. • TEK: 7.7 A, B • Warm up: What is the mechanical advantage of this inclined plane? 5m 1 m

  27. Question: Does the amount of time to do something effect how much power a person has? What is an inclined plane? What is a lever? What is work? What is energy? What is force?

  28. Research: • Power: is the rate (how fast) at which work is done • Inclined Plane: Inclined plane: a simple machine with a flat slanted edge (a ramp) • Lever: a simple machine that has a bar balanced on a single point called a fulcrum. • Energy is the ability to do work. • Force is a push or pull

  29. Flip Book • Vocabulary Words • Spring scale • Potential energy • Kinetic energy • Energy • Force • Inclined plane • Lever • Newton’s First Law of Motion • Unbalanced force • Balanced force • Work • Power • Joules • Watts

  30. Recall: Rate means how fast • Summary: Explain how words power and work relate. • Out: Identify all simple machines in this picture.

  31. 10.8.10 QUIZ • We will use critical thinking skill to take a quiz. • TEK7.7 • Warm up: George is 300N and can run 400m in 60 sec. How much power does George have?

  32. Board Game

  33. Recall: Work = Force X Distance • Summary: what was the hardest part of the quiz? • Out: Draw 2 pictures. Have your neighbor guess if the people in your pictures are really doing work or not.

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