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Simple Machines

Ms. Smith Mrs. Malone Ms. Cedillo. Simple Machines. January 13, 2014. DO NOW: Date: January 13, 2014 6.8E  investigate how pulleys can be used to change the amount of force needed to move an object . Copy down this week’s TEKS

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Simple Machines

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  1. Ms. Smith Mrs. Malone Ms. Cedillo Simple Machines January 13, 2014 DO NOW: Date: January 13, 2014 6.8E investigate how pulleys can be used to change the amount of force needed to move an object. Copy down this week’s TEKS Q?: Did you do any work (scientifically speaking) this weekend? Explain.

  2. Ms. Smith Mrs. Malone Ms. Cedillo Homework January 13, 2014 Write HW in agenda: “Pulley” Reading and Questions – due Friday Write answers to questions on a separate sheet of paper and staple to reading.

  3. Ms. Smith Mrs. Malone Ms. Cedillo Simple Machines January 13, 2014 Finish Science Court: Science Court: Work and Simple Machines

  4. Ms. Smith Mrs. Malone Ms. Cedillo Pulley Observation Sheet January 13, 2014 Tape “Pulley Observation Sheet” to page 69. Observe the picture of a pulley below. Answer the questions on your “Pulley Observation Sheet”.

  5. Ms. Cedillo Pulleys January 13, 2014 BrainPop: Pulley Be listening for common examples of pulleys!

  6. Ms. Cedillo Pulley Exit Ticket January 13, 2014 What is a pulley? How does it help us do work?

  7. Ms. Smith Mrs. Malone Ms. Cedillo Pulleys January 14, 2014 DO NOW: Date: January 14, 2014 6.8E investigate how pulleys can be used to change the amount of force needed to move an object. Q?: In your own words, define the words effort and load.

  8. Ms. Smith Mrs. Malone Ms. Cedillo Pulleys January 14, 2014 DO NOW REVIEW: Q?: What is effort? What is load? Effort = the force exerted on a load Load = the weighted object being moved These definitions are in your homework

  9. Ms. Smith Mrs. Malone Ms. Cedillo Pulley Reading Jigsaw January 14, 2014 Today’s Assignment Each group will be assigned either Reading #1 (Pulley Theory-Egyptians) or Reading #2 (Pulley Personality-Rube Goldberg) As a group, you will read the reading and create a poster answering the following questions: What was the main idea of your reading? How did the person/people in your reading use pulleys? Would we use the pulley in the same way today? Why or why not? Group 1 (Pulley Theory-Egyptians): Destiny, Jennifer, Tre, Elisandro Group 2 (Pulley Personality-Rube Goldberg): Elijah C, Ian, David, Elijah G, Isaiah

  10. Ms. Smith Mrs. Malone Ms. Cedillo Pulley Poster January 14, 2014 Poster Grading Rubric Main Idea clearly stated = 25 points How person/people used pulley clearly stated = 25 points Description of how/if we would use pulley today = 25 points Color, neatness, organization, illustrations, overall high quality poster = 25 points DUE AT END OF CLASS! If your group finishes early, you may work on your homework.

  11. Ms. Smith Mrs. Malone Ms. Cedillo Pulleys January 15, 2014 DO NOW: Date: January 15, 2014 6.8E investigate how pulleys can be used to change the amount of force needed to move an object. Q: How do you think flagpoles work? Write in Agenda: Simple Machines Quiz on Friday

  12. Ms. Smith Mrs. Malone Ms. Cedillo Pulleys – Page 70 January 15, 2014 Flagpole = fixed pulley (fixed=stays in same spot; does not move) Fixed pulleys onlychange the direction of the force; do not reduce force

  13. Ms. Smith Mrs. Malone Ms. Cedillo Simple Pulley Set-Up January 15, 2014 • Follow directions to set up your simple fixed pulley • Lift various objects with pulley • Use spring scale to determine how much force is needed to lift objects with and without pulley • Fill in Data Table in journal on page 71

  14. Ms. Smith Mrs. Malone Ms. Cedillo Movable Pulleys January 15, 2014 • Movable pulley – more than one pulley that can move • The more pulleys, the more mechanical advantage • Does the spring scale confirm this?

  15. Ms. Smith Mrs. Malone Ms. Cedillo Movable Pulley Demo January 15, 2014 • Movable Pulley Demo OR Lab with CPO pulleys • Eureka! Pulleys

  16. Ms. Smith Mrs. Malone Ms. Cedillo Interesting Pulley Info! January 15, 2014 Rube Goldberg Pulley contest 2014: http://www.rubegoldberg.com/ Rube Goldberg Machine – OK GO music video

  17. Ms. Smith Mrs. Malone Ms. Cedillo Pulleys Exit Ticket #2 January 15, 2014 What is the difference between a fixed pulley and a movable pulley? Which gives you a greater mechanical advantage?

  18. Ms. Smith Mrs. Malone Ms. Cedillo Simple Machines Extension (extra time) January 15, 2014 Divide page ____ into six boxes. In the upper left-hand corner of each box, write the following words: inclined plane, pulley, lever, wheel and axle, wedge, screw In our journals, we will walk around the school recording as many examples of simple machines as we can in these boxes. Voice levels in hallway = 0!!!!!!* (SIGN LANGUAGE ONLY!) *unless given permission

  19. Ms. Smith Mrs. Malone Ms. Cedillo Simple Machines January 17, 2014 DO NOW: Date: January 17, 2014 6.8E investigate how inclined planes and pulleys can be used to change the amount of force needed to move an object. Q?:What is the difference between a fixed pulley and a movable pulley?

  20. Ms. Smith Mrs. Malone Ms. Cedillo Simple Machine Quiz January 17, 2014 Clear your desk Voice Level 0 Read silently until everyone is finished

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