Class members work in pairs to build a catapult to launch a grape a given distance. The catapult project, a compound machine, reinforces pupils' understanding of simple machines.

Concepts

compound machines, simple machines, levers, wheels, axles, catapults, engineering design, civil engineering, technology resources

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Instructional Ideas

• Allow the pairs to improve the design to see if they can be more accurate

Classroom Considerations

• You will need space in order to launch the grapes
• Copy the building directions and distribute to each pair
• The eighth part in a 10-part series

Pros

• The activity has assessments to use before, during, and after the activity
• The directions include pictures on what the catapult should look like at different stages of construction

Cons

• The directions do not allow for the creativity of the pairs to build their own designs

Common Core

6.SP.A.3 6.SP.B.5.a 6.SP.B.5.b 6.SP.B.5.c