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Grade Four
How does a lever help us to do work?

Hard work gets easier when you use a simple machine such as a lever. Use these web pages to try some activities with levers and get ideas for your own projects.

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Title: Grain Strain
Description: The name of the activity on this webpage is Grain Strain, and in this interactive lesson students drag machines from the bottom of the screen to solve a problem. A point-and-click interface is used; the student must first construct a compound virtual machine and then use this machine to drag-and-drop grain strain into a bucket. The student has one minute to catch 40 grains in order to move on to the next level.
URL: http://www.sciencemuseum.org.uk/online_science/games/gr ...

Title: Engineering: Simple Machines
Description: This is a great unit on simple machines. It includes background information, worksheets, a power point presentation and supporting activities.
URL: https://www.teachengineering.org/lessons/view/cub_simpl ...

Title: Braking & Steering
Description: How do you stop a moving bicycle? What is the science behind steering? What forces keep the bicycle from falling over? This page discusses and answers these questions.
URL: http://www.exploratorium.edu/cycling/brakes1.html

Title: Kikki's Workshop-We Love Construction Equipment
Description: Look at this site if you want to learn more about construction equipment such as dump trucks, excavators, and bulldozers. There are videos and animations of these machines in action and a list of FAQs. The site is also available in Japanese.
URL: http://www.kenkenkikki.jp/e_index2.html

Title: Pinball Wizard: Levers and Planes
Description: Pinball Wizard is a hands-on science and engineering activity for elementary students in grades 4-6. Students build a simple pinball machine out of inclined planes and levers while exploring concepts like gravity. In this hands-on activity students will construct their pinball machines using the engineering design process and easy-to-find materials like straws and cardboard. Once constructed the pinball machine will be able to shoot a marble and send it zigzagging down an obstacle course!
URL: http://www.pbs.org/parents/fetch/activities/act/act-pin ...

Title: Simple Machines
Description: Help Twitch with his simple machines dilemmas. Learn about an inclined plane, pulley, lever, and wheel and axel.
URL: http://www.msichicago.org/fileadmin/Activities/Games/si ...

Title: Simple Machines
Description: The Dirtmeister is challenging you to learn about the six types of simple machines. Find an example of one that you have seen at school, home or anywhere and write about it. What do you say, are you up to the challenge?
URL: http://teacher.scholastic.com/dirtrep/simple/index.htm

Title: Simple and Complex Machines
Description: In this on-line science lab, students are introduced to the concept of Mechanical Advantage and charged with the task of building a city out of stone using only simple and complex machines.
URL: http://aspire.cosmic-ray.org/Labs/Machines/

Title: Break It Down
Description: The page provides an online activity that allows the student to see how gears, ramps, and switches can make a machine more effective.
URL: http://sciencenetlinks.com/tools/break-it-down/

Title: Inventor's Workshop
Description: This page provides a lesson plan in which simple machines are studied along with how Leonardo DeVinci incorporated them in his inventions.
URL: http://www.discoveryeducation.com/teachers/free-lesson- ...

Title: Force and Motion Lessons and Worksheets
Description: Gravity, forces, motion, friction, and simple machines lessons and worksheets are available along with scoring guides.
URL: http://www.cape.k12.mo.us/blanchard/hicks/news pages/sc ...

Title: Simple Machines
Description: This front-page site has information about each of the six types of simple machines and links to further information, games and quizzes and an activity sheet.
URL: http://www.mikids.com/Smachines.htm

Title: Simple Machines
Description: This set of activities designed for grades 3 and 4 gives students experiences in using simple machines.
URL: http://www.grc.nasa.gov/WWW/K-12/Summer_Training/KaeAve ...

Title: Marvelous Machines
Description: This webpage links to a series of excellent experiments designed for students in the 3rd grade on simple machines. Students experiment with simple mechanical devices and explain how they work. This site provides experiments, material lists, worksheets designed for students and lesson plans for hands-on problem solving using manipulatives.
URL: http://www.galaxy.net/~k12/machines/