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

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

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

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

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

Pulleys January 14, 2014 DO NOW: Date: January 14, E 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. 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 Ms. Smith Mrs. Malone Ms. Cedillo

Pulley Reading Jigsaw January 14, 2014 Today’s Assignment Ms. Smith Mrs. Malone Ms. Cedillo Each group will be assigned either Reading #1 (Pulley Theory- Egyptians) or Reading #2 (Pulley Personality-Rube Goldberg)assigned As a group, you will read the reading and create a poster answering the following questions: 1.What was the main idea of your reading? 2.How did the person/people in your reading use pulleys? 3.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

Pulley Poster January 14, 2014 Poster Grading Rubric Ms. Smith Mrs. Malone Ms. Cedillo 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.

Pulleys January 15, 2014 Ms. Smith Mrs. Malone Ms. Cedillo DO NOW: Date: January 15, E 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

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

Simple Pulley Set-Up January 15, 2014 Ms. Smith Mrs. Malone Ms. Cedillo Follow directions to set up your simple fixed pulleydirections 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 ObjectForce (N) Needed to lift WITH pulley Force (N) Needed to lift WITHOUT pulley

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

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

Interesting Pulley Info! January 15, 2014 Ms. Smith Mrs. Malone Ms. Cedillo Rube Goldberg Pulley contest 2014: Rube Goldberg Machine – OK GO music videoOK GO music video

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

Simple Machines Extension (extra time) January 15, 2014 Ms. Smith Mrs. Malone Ms. Cedillo 1.Divide page ____ into six boxes. 2.In the upper left-hand corner of each box, write the following words: inclined plane, pulley, lever, wheel and axle, wedge, screw 3.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

Simple Machines January 17, 2014 DO NOW: Date: January 17, E 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? Ms. Smith Mrs. Malone Ms. Cedillo

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