ࡱ > u x t } ^$ bjbj55 7~ _ _ ^ _ _ _ _ _ s s s s L s I- , , , , , , , $ / m2 V , _ , _ _ - _ _ , , ) + # k s * , - 0 I- * 6 2 2 , + 2 _ + , , I- 2 % : Subject: Science Date: February 2008 Duration: 45 mins Unit: Simple Machines Grade: 4/5 PLOsBig IdeasGrade 4 Processes and Skills of Science Make predictions, supported by reasons and relevant to the content Grade 5 Physical Science: Forces and Simple Machines Demonstrate how various forces can affect the movement of objects Demonstrate mechanical advantage of simple machines, including lever, wedge, pulley, ramp, screw, and wheel Design a compound machine Describe applications of simple and compound machines used in daily life in BC communitiesWhat is a simple machine? What is a compound machine? How do simple machines make work easier for us? Where can we find examples of simple machines? Key Knowledge and Skills Students Will AcquirePerformance TasksThe difference between simple and compound machines Without the simple machines the surround us, our world would be very different. Simple machines give us a mechanical advantage meaning they help us do more work with less effortCompletion of Experimentation Worksheets Scavenger Hunt for simple machines around the classroom (and possibly school) Quiz Halfway through unit Test At completion of unit Lesson # and TitlePurpose of LessonActivitiesMaterialsAssignment/Assessment Lesson 1: Introduction to Simple and Compound MachinesDiscover what is a simple machine and compound machine Introduce the 6 types of simple machines and definitions of themIntroduce topic by having them imagine a way to move a large zoo animal. Discuss what a machine is and why we use them. Discuss what is a simple machine and what is a compound machine Introduce the 6 types of simple machines using pictures of examples. Divide class into 6 groups and each group will come up with a definition for each simple machine. Share as a class Give the students the proper definitions of the simple machines and let them copyPictures of the different types of simple machines Definitions for the simple machine types (overhead)Review at end of class: What is a simple machine? Why do we use them? Clarify if necessary Lesson 2: Proving Simple Machines Make Work EasierStudents learn about force and work Students will prove through experimentation that the 6 types of simple machines make work easierReview what a simple machine is What is force? What is work? Can you have force without work? How do simple machines make work easier? Students will circulate between 6 stations featuring the 6 types of simple machines. They will construct the machines and test whether or not they make work easierStation worksheets Instructions at each station Materials for each of the stationsStation worksheets will be collected and marked for completion Lesson 3: Continuation of ExperimentsStudent will finish their experimentation with simple machinesStudents will continue to circulate between the stations until they have visited all six Once completed, discuss as a class the results In pairs, students will think of a problem or situation that they think a machine would make easierStation worksheets Instructions at each station Materials for each of the stationsWhat did they learn from the experiments? What anything surprising? Problem or situation that you think a machine would make easier Lesson 4: Wheel and AxleIntroduce the wheel as a simple machine Importance of friction to do work The bigger the wheel size, the less force for more workReview our definition of a wheel and axle Friction: What is it? How much work would we get done without it? Friction experiment: Two books, one on marbles, which item moves with less force? Wheels reduce friction Wheel size experiment: Two cars with different size wheels; see which car made the most turnsDictionaries Two books Marbles Masking tape 2 cars with different sizes wheels Poster boardAsk What did we learn today? Experiment observation sheet Lesson 5: Inclined PlaneIntroduce the inclined plane as a simple machine and how they make work easier Different between a steep ramp and a gradual rampReview our definition of an inclined plane How does a ramp make work easier? Does the length of the ramp matter Experiment: Lifting a load straight up vs. steep ramp vs. gradual ramp(2) Paper (steep & gradual ramp) Experiment record sheet (3) 4 feet of string (3) Matchbox cars (3) Empty film containers Handful of pennies (2) Pieces of cardboardExperiment observation sheet Lesson 6: ScrewIntroduce the screw as a simple machine and how it makes work easier Different types of screwsReview our definition of a screw Identify the parts of a screw Experiment Making a Screw What is the purpose of a screw? Guessing game: Which are examples of screws?Scissors Square paper (6 inches) Marker Pencil Examples of screws sheetWhich are examples of screws? sheet markedSmall Celebration of Learning (Quiz) & Lesson 7: WedgeAssess students understand of the 3 simple machines they have learned about and learn the roles of a wedgeQuiz on Simple Machines, Wheel/Axle, Inclined Plane & Screw Review our definition of a wedge and inclined plane Experiment wedges that split Wedges that cut, hold and tightenQuiz 3 apples Plastic knifeQuiz Lesson 8: LeverLearn the parts of a lever and first & second class leversReview our definition of a lever Learn the 3 parts of a lever Experiment Making a First Class Lever Experiment Making a Second Class LeverYard stick Tape String BookLever example sheet Experiment observation sheetLesson 9: Lever IILearn third class levers, double levers and play a matching game for leversReview First and Second Class Lever Experiment Making a Third Class Lever Matching Game What class of lever is this? Double leversYard stick Tape String BookLever example sheet Experiment observation sheet Lesson 10: PulleyLearn the different kinds of pulleys fixed, movable and double pulley systemReview our definition of a pulley Two kinds of pulleys Fixed and Moveable Experiment Fixed Pulley Experiment Movable Pulley Experiment - Double pulley systemBroom String Small bucket Books Paper clipExperiment observation sheetLesson 11: Scavenger HuntStudents will look for examples of simple machines in the environmentScavenger hunt for simple machines in the classroom; in groupsScavenger Hunt sheetScavenger Hunt sheetLesson 12: Scavenger HuntStudents will look for examples of simple machines in the environmentScavenger hunt for simple machines around the schoolScavenger Hunt sheetScavenger Hunt sheetLesson 13: Review results of Scavenger HuntStudents will look for examples of simple machines in the environmentReview simple machines that the class found around the school and class room. Discuss how certain machines make work easierScavenger Hunt sheetScavenger Hunt sheetCelebration of LearningAssess students understanding of the material in the unitPractice some relaxation techniques learned from FRIENDS program to ease anxiety Test on all material from simple machines unitTestTest S X ) / 7 8 H P Q q r A B r 떈w떈wwwwldd\he:y CJ aJ h?3 CJ aJ h5 h5 CJ aJ hC h5 CJ ^J aJ nH tH h5 CJ ^J aJ nH tH &hC h5 CJ \]^J aJ nH tH h# h5 CJ aJ h# h5 5CJ aJ h5F h5 CJ aJ hz h5 CJ aJ h h CJ aJ h5 5CJ aJ h5 CJ aJ h