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Grades 612. Learn how various gear ratios and combinations affect the speed, direction, and torque of a small student-built electric car. Students calculate mechanical advantage and gear ratios for various combinations of gears. Based upon what they learn about gear train combinations, they design and build a car for speed and for climbing. Kit includes teacher’s manual and materials for 10 groups of 2 to 3 students. Common household tools and classroom supplies are needed but not supplied.
Grades 612. Introduce your students to wheels and axles, then extend that lesson to provide a basic understanding of gear torque, rotation, and direction change. As student groups build a model car, they soon discover the trade-off between force and speed.
Activities in this kit help you teach the following Next Generation Science Standards®:
Kit includes a teacher’s manual with reproducible student guide and the materials for 10 groups of 2 to 3 students. Common household tools and classroom supplies are needed but not supplied.
|Wheels, Gears, and Axles Pack||10||Included|
|Single AA Battery Holders||10||Included|
|Single Pole/Single Throw Knife Switch||10||Included|
|8-Teeth Pinion Gears||10||Included|
|10-Teeth Pinion Gears||10||Included|
|Pipe Cleaners, Assorted Colors||25||Included|
|Digital Resource Card||1||Included|
|Teacher's Manual with Reproducible Student Guide||1||Included|
|Scissors||10||Needed, Not Included|
|Rulers (metric or standard)||10||Needed, Not Included|
|Sharpened Pencils||10||Needed, Not Included|
|Permanent Markers||10||Needed, Not Included|
|Timers||10||Needed, Not Included|
|20- to 30-g Weight Sets (made up of washers, coins, masses, etc.)||10||Needed, Not Included|
|Screwdrivers (slot head/flat head or Phillips)||5||Needed, Not Included|
|Needle-Nose Pliers||3||Needed, Not Included|
|Transparent Tape Dispensers with Tape||3||Needed, Not Included|
|Small Hammers or Mallets||3||Needed, Not Included|
|Inclined Planes or Pieces of Corrugated Cardboard (at least 50 cm L x 25 cm W)||3||Needed, Not Included|
|Thread or String||Needed, Not Included|