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Force Questions for the Garden Harvest Counter

Compare school garden marker designs using electric and magnetic force data, then ask cause-and-effect questions for further tests.

Grade 3ScienceInteractive · Printable

Aligned to3-PS2-3

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What’s included

Single worksheet
Auto-graded online
1 NGSS standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 3
Subject: Science
Question types: Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students ask cause-and-effect questions about electric and magnetic forces between objects that are not touching.
Students use test results to compare marker designs and identify changes for fair investigations.
Students support a claim about noncontact forces with electric and magnetic test evidence.

How to use

Read the garden counter investigation together. Have students compare the designs, choose fair tests, and write new questions supported by the observations.

Curriculum

NGSS standard covered

3-PS2-3

Ask questions about cause and effect in electric and magnetic forces between objects that are not touching.

Preview

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Force Questions for the Garden Harvest Counter

Compare marker designs and ask questions about forces across a gap.

Compare Magnetic Marker Designs

Read the investigation and graph. Use the results to compare designs and plan questions.

A Counter for the School Garden

At the school garden's harvest counter, students record baskets of vegetables. They want a marker that starts moving without a hand touching it. The garden club compares two ideas: a sliding magnetic marker and a light tissue-paper marker pulled by a rubbed plastic spoon. They test indoors so breezes will not move the markers.

For the magnetic idea, an adult secures a large bar magnet in a foam holder that can slide on a smooth tray. A second magnet is held still nearby. The magnets begin with their north ends facing each other. The adult handles the magnets and keeps them away from mouths and electronic devices.

The club compares three designs that place the held magnet at different starting gaps. Near starts at 1 centimeter, Middle at 3 centimeters, and Far at 5 centimeters. The magnets, facing ends, holder, tray, and five-second test time stay the same. The club makes six tries with each design, resetting the marker each time. Students count a success when the marker starts moving away while the magnets are still separated. The graph shows their results.