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To Do Grade 2/4, 6/8 quizzes Grade PR quizzes Give back brainstorming sheets to P1/3 Fill out reimbursement form Make missed office hour slips Make video & booklet notes for Nonmechanical Energy

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Unit 1, Day 7 – KE in Collisions HW Due: Conservation of Energy January 29 th (odd periods) or 30 th (even periods)

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Agenda Announcements (2 min) Homework Quiz (10 min) Reflection on Yesterday’s Homework Quiz (3 min) Review Today’s HW Quiz (20 min) Intro Activity for Class Topic (15 min) Break (5 min) Booklet Notes for Class Topic (10 min) Update Learning Log (5 min) Project Work Time (30 min) Homework (5 min)

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Announcements Please turn in your “Heal the Bay” permission slip You are expected to return to DVD on the bus Your HTB materials will be used in your projects; therefore missing the field trip will result in poor grades on your projects and in class

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Homework Quiz – Conservation of Energy Two forms Calculators (NOT PHONES) are allowed Advanced Question has multiplication, algebra, and exponents Leave answer with square root if you don’t have a calculator U1D6 quizzes will be returned during this time

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Reflect on M/T’s HW Quiz Based on your score, does this change any of your numbers in your learning log (1/29 or 30)? Knowledge Targets: #9 Reasoning Targets: F 5: No Idea 6: Heard it before 7: Recall definition 8: Recall definition & simple calculations 9: Total beast Average for Students who Took Notes: 8.5 Average for Students who did NOT Take Notes: 6.3

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Review Today’s Homework Quiz What is the definition of “Conservation of Energy”? What is the equation for “Conservation of Energy”?

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Review Today’s Homework Quiz Which position has: The most KE? The most PE? Approximately equal amounts of KE & PE?

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Review Today’s Homework Quiz If position #1 had 14J of potential energy… How much KE & PE would the other positions probably have? PE = KE = PE = KE = PE = KE = PE = KE = PE = KE =

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Review Today’s Quiz A cow is at rest at 6m high and then is dropped. What is its velocity when it is still 3m above the ground? 6 meters 3 meters

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Intro Activity http://phet.colorado.edu/sims/collision-lab/collision-lab_en.html http://phet.colorado.edu/sims/collision-lab/collision-lab_en.html Push tab all the way to 100% elastic Uncheck “Velocity Vectors” Check “Show Values” & Check “Kinetic Energy” Press Play Initial Momentum of Red (kg*m/s) Initial Momentum of Green (kg*m/s) Initial OVERALL Kinetic Energy Final Momentum of Red (kg*m/s) Final Momentum of Green (kg*m/s) Final OVERALL Kinetic Energy

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Intro Activity For the 100% elastic collision: Calculate the initial momentum Calculate the final momentum Is the momentum before and after the same? ( Y or N ) Is the kinetic energy before and after the same? ( Y or N )

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Intro Activity http://phet.colorado.edu/sims/collision-lab/collision-lab_en.html http://phet.colorado.edu/sims/collision-lab/collision-lab_en.html Push tab all the way to 0% elastic Uncheck “Velocity Vectors” Check “Show Values” & Check “Kinetic Energy” Press Play Initial Momentum of Red (kg*m/s) Initial Momentum of Green (kg*m/s) Initial OVERALL Kinetic Energy Final Momentum of Red (kg*m/s) Final Momentum of Green (kg*m/s) Final OVERALL Kinetic Energy

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Intro Activity For the 100% elastic collision: Calculate the initial momentum Calculate the final momentum Is the momentum before and after the same? ( Y or N ) Is the kinetic energy before and after the same? ( Y or N )

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Break

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Booklet Notes Staple insert into your booklet Put notes on page 13

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Update Learning Log Knowledge Targets: #12 5: No Idea 6: Heard it before 7: Recall definition 8: Recall definition & simple calculations 9: Total beast

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Store Each ticket will get you a certain amount of a material You cannot get multiple of the same materials Paper is unlimited

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Brainstorming Based on the materials you have or will have in the future Brainstorm 12 different steps: Must have different causes and effects! Brainstorm 3 simple “Final Tasks” related to your topic Recall Specifications Only Step 1 has human interaction One object rises to max of 2 feet A different object falls to min of 0 feet 8 Steps minimum. A step: Cause Effect 30 seconds to 5 minutes

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Our Topic: __________________ Final Task Ideas: 1: _________________ because… 2: _________________ because… 3: _________________ because… Step #1 Cause: Effect: Step #2 Cause: Effect: Step #3 Cause: Effect: Step #4 Cause: Effect: Step #5 Cause: Effect: Step #6 Cause: Effect: Step #7 Cause: Effect: Step #8 Cause: Effect: Step #9 Cause: Effect: Step #10 Cause: Effect: Step #11 Cause: Effect: Step #12 Cause: Effect:

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Project Work Time Brainstorming must be approved Work time; everyone should be participating DUE AT END OF PERIOD: Brainstorming Sheet

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Homework Watch Video on “Non-Mechanical Energy” Bring more materials to work on Rube Goldberg

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Frank L. H. WolfsDepartment of Physics and Astronomy, University of Rochester Physics 121. Thursday, February 21, 2008. Conservation of energy! Changing.

Frank L. H. WolfsDepartment of Physics and Astronomy, University of Rochester Physics 121. Thursday, February 21, 2008. Conservation of energy! Changing.

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