![Children on teeter-totter](/sites/default/files/styles/resource_card_image_360x300_/public/2020-03/children_on_teeter_totter.jpg?itok=Biz7eAsO)
Simple Machines - Levers
Backgrounders
The lever is a type of simple machine. Learn about the different classes of levers and how they provide mechanical advantage.
![Chisels Chisels](/sites/default/files/styles/resource_card_image_360x300_/public/Klopfholz_mit_Beiteln.jpg?itok=I8HFNy5J)
Simple Machines: Wedges
Picture Collections
6 images of some tools such as axes and spikes that are inclined planes and used to help push objects apart
![Ferris Wheel: The London Eye Ferris Wheel: The London Eye](/sites/default/files/styles/resource_card_image_360x300_/public/London_Eye_-_head_on_view.jpg?itok=LdM6yYsS)
Simple Machines: Wheels And Axles
Picture Collections
6 images of some objects such as ferris wheels and skate boards with wheel and axle mechanisms that create rotary movement
![Roller Coaster Roller Coaster](/sites/default/files/styles/resource_card_image_360x300_/public/photo-1454520910860-c95bba7de5a2.jpg?itok=9wC1kwyB)
Simple Machines: Inclined Planes
Picture Collections
5 images of examples where inclined planes are used to help lift or move objects such as ramps for accessibility or entertainment
![Seesaw [Class 1 Lever] Seesaw [Class 1 Lever]](/sites/default/files/styles/resource_card_image_360x300_/public/seesaw.jpg?itok=pRWoCsg2)
Simple Machines: Levers
Picture Collections
6 images of some objects such as tweezers, scissors and wheel barrows that use the lever principle to create movement for a specific purpose
![Pulley With Chains Pulley with Chains](/sites/default/files/styles/resource_card_image_360x300_/public/ARA2011-01-03_13-46-56.jpg?itok=bSBBEgxq)
Simple Machines: Pulleys
Picture Collections
6 images of some objects such as in fitness equipment which use wheels with grooves in their rims called pulleys for movement
![Wood Screw Wood Screw](/sites/default/files/styles/resource_card_image_360x300_/public/Screw_3.jpg?itok=AnqMZDRD)
Simple Machines: Screws
Picture Collections
5 images of some objects such as corkscrews that have a mechanism of an inclined plane wrapped around a cylinder to create movement
![How does a wheelbarrow help you carry heavy loads?](/sites/default/files/2019-08/how-does-a-wheelbarrow-help-you-carry-heavy-loads.jpg)
How does a wheelbarrow help you carry heavy loads?
Hands-on Activities
In this hands on activity build a wheelbarrow from simple materials to explore just how useful simple machines can be!
![Catapult near Castle Saint-Angel, Italy](/sites/default/files/styles/resource_card_image_360x300_/public/2019-12/Catapult_Italy.jpg?itok=IRuk9s_f)
Design & Build a Ping Pong Ball Launcher
Lessons
Students work collaboratively to design and build a device that uses simple machines to launch ping-pong balls.