# Catapult

Students can build and manipulate these tiny catapults to learn about motion, the history of science and technology, and the scientific method.

Curriculum Topics: Motion & Forces, History of technology

### Standards

Idea Sheets are cross-referenced to subjects listed in the Common Core, Next Generation Science Standards, and California Content Standards.

Plan and conduct an investigation to provide evidence of the effects of balanced and unbalanced forces on the motion of an object. ||Next Generation Science Standards||Grade 3||Physical Science||Motion and Stability: Forces and Interactions |||Make observations and/or measurements of an object’s motion to provide evidence that a pattern can be used to predict future motion. [Examples: a child swinging in a swing, a ball rolling back and forth in a bowl, and two children on a see-saw.] “||Next Generation Science Standards||Grade 3||Physical Science||Motion and Stability: Forces and Interactions |||Use evidence to construct an explanation relating the speed of an object to the energy of that object. ||Next Generation Science Standards||Grade 4||Physical Science||Energy |||Support an argument that the gravitational force exerted by Earth on objects is directed down.||Next Generation Science Standards||Grade 5||Physical Science||Motion and Stability: Forces and Interactions|||Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object & the mass of the object.||Next Generation Science Standards||Middle School||Physical Science||Motion and Stability: Forces and Interactions |||Construct, use, & present arguments to support the claim that when the motion energy of an object changes, energy is transferred to or from the object.||Next Generation Science Standards||Middle School||Physical Science||Energy

1.c. The way to change how something is moving is to give it a push or a pull. The size of the change is related to the strength, or the amount of “force,” of the push or pull.||CA Science||Grade 2||01. Physical Sciences||1. The motion of objects can be observed and measured.|||1.d. Tools and machines are used to apply pushes and pulls (forces) to make things move.||CA Science||Grade 2||01. Physical Sciences||1. The motion of objects can be observed and measured.|||1. Motion||CA Science||Grade 8||01. Physical Sciences|||2. Forces||CA Science||Grade 8||01. Physical Sciences

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