Wind-Up Toy Joe E. Hart Grade 4 Description of Lesson: Student make a wind-up toy using a soda can, rubber bands, cotton swab, paper clip, and a nut.

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Wind-Up ToyJoe E. HartGrade 4Description of Lesson: Student make a wind-up toy using a soda can, rubber bands, cotton swab, paper clip, and a nut. Student measure distance of their wind-up toy. Connection to the science standards are discusses.S4P3 Students will demonstrate the relationship between the application of a force and the resulting change in position and motion on an object.

Identify simple machines and explain their uses (lever, pulley, wedge, inclined plane, screw, wheel and axle).

d. Demonstrate the effect of gravitational force on the motion of an object.

Materials Needed to Begin

Soda CanPaper ClipRubber band #32Jumbo Paper Clip shaped like a fishing hookNutCotton SwabPreparations

Wash CanPull off TabPunch Hole in top with screw driverPunch Hole in the bottom with screw driverWedge Rubber Band onto the Paper Clip

Hook Rubber Band

HookRubber BandPaper ClipSend paper clip hook through bottom of can

Thread paper clip hook through the small hole in the top of the can

Thread the paper clip hook through the nut and let it drop onto the top of the can.

Pull the rubber band up through the small hole. Wedge the cotton swab into the rubber band above the nut.

Slide the cotton swab about 1/5 through the rubber band.

Remove the hook. Mr. Hart will need to keep the hooks for the next class.

Wind up your toy 40 times.

Set the can down and watch what happens.

Friction

Train your wind up toy to go straight.

Potential EnergyEnergy that can be used later

I dont think it has enough potential energy.18Passages often support or oppose a hypothesis, generalization, or principle.

I Think I Can?Oops!19As a result many students are frustrated and their motivational altitude declines in science education.Kinetic EnergyThe energy of an object in motion

The rubbing of things against each other that slows down the motion

Friction

The force that pulls things toward the EarthGravity

Gravity

Object remains at rest or remains in motion until acted on by an outside force.Inertia

Inertia26Prereading activities serves as a bridge from a students background and experiences to science content in the text. It promotes interest, engagement, and motivation to read the text.