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3rd Grade Science Experiments

Choose third grade science experiments that turn questions about matter, forces and living things into observable investigations. Find practical activities and recording tools for young scientists.

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Showing 1–24 of 105 resources

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Science Research: Forces and Movement teaching resource preview
Forces & electricity

Science Research: Forces and Movement

A blank student investigation worksheet guiding a hands-on experiment testing how the surface a toy car rolls onto affects the distance it travels, to teach the concept of friction.

File
PDF
Level
2–6
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10 Plant Experiments for Elementary School teaching resource preview
Plants & living things

10 Plant Experiments for Elementary School

A 90-minute biology lesson package guiding students through 10 hands-on plant experiments exploring how light, water, and soil affect plant growth.

Answers included
File
PDF
Level
3–5
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Magnets Activity teaching resource preview
Forces & electricity

Magnets Activity

Simple science investigation worksheet where students test and compare the strength of five types of magnets.

File
PDF
Level
2–4
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Absorbency Test teaching resource preview
Matter & reactions

Absorbency Test

Guide students through a hands-on science experiment testing the absorbency of different types of paper, recording predictions, method, results, and a conclusion.

File
PDF
Level
3–5
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Water Cycle Experiment Worksheet teaching resource preview
Earth, water & weather

Water Cycle Experiment Worksheet

This Water Cycle Experiment Worksheet is a great resource for students to use to conduct their own experiment on the water cycle. By doing this experiment, students will have a better understanding of how the water cycle works. This worksheet is a great tool for teachers to use in their classrooms.

File
PDF
Level
2–5
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Science Action Labs Water Science: Active Science with Water teaching resource preview
Earth, water & weather

Science Action Labs Water Science: Active Science with Water

A 23-chapter set of hands-on science labs and activities exploring water science topics for upper elementary/middle school students: water pressure, buoyancy, chemistry, surface tension, ice, purification, conservation, weather, and water's role in life.

Answers included
File
PDF
Level
4–8
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Black Hole Experiment Activity teaching resource preview
Forces & electricity

Black Hole Experiment Activity

A single-page hands-on activity using a magnet and paper clips as a physical analogy to demonstrate how black holes attract objects.

File
PDF
Level
2–12
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3ER GRADE SCIENCE EXPERIMENTS | SUPER BOOK teaching resource preview Free download
Experiment collections

3ER GRADE SCIENCE EXPERIMENTS | SUPER BOOK

A collection of simple hands-on science experiments (e.g., mini tornado in a bottle, balloon rocket, bridge building challenge, mini parachute), each paired with a student scientific-method worksheet template.

File
PDF
Level
3
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Life Cycle & Plant Science Observation Journals teaching resource preview
Plants & living things

Life Cycle & Plant Science Observation Journals

In-depth teacher background/theory guide on plant biology (seed anatomy, germination, root systems, photosynthesis) paired with embedded fill-in-the-blank student journal prompts and classroom experiment suggestions, intended to support a plant life-cycle observation unit.

File
PDF
Level
1–6
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Our Earth Activity Booklet teaching resource preview
Earth, water & weather

Our Earth Activity Booklet

Teach 9-12 year old students earth science concepts (earth structure, landforms, rivers, coastal landscapes, oceans) through a photocopiable activity and experiment booklet.

File
PDF
Level
4–7
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Fun Science Activities teaching resource preview
Experiment collections

Fun Science Activities

Provide a collection of hands-on science experiments/demonstrations (chemical reactions, physical science, sensory play) for elementary students to try with adult-supplied household materials.

File
PDF
Level
2–5
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Force and Motion Science Experiment teaching resource preview
Forces & electricity

Force and Motion Science Experiment

Students predict which balls will need the most and least blowing to begin rolling, then record observations for up to six balls on soft-to-vigorous scales. Two recording pages provide hypothesis, experiment, outcome and conclusion sections. Compare results with predictions and discuss the limits of the test: different balls vary in several properties, so these qualitative observations do not isolate the effect of weight, size or texture alone.

File
PDF
Level
3–5
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Electricity Unit Study | Static and Current Electricity teaching resource preview
Forces & electricity

Electricity Unit Study | Static and Current Electricity

An elementary unit-study booklet (with combined student and teacher booklet versions) on static electricity, static discharge/shock, lightning, and Benjamin Franklin's kite experiment; the title indicates current-electricity content is also covered.

File
PDF
Level
3–5
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Lesson Plan on Photosynthesis teaching resource preview
Plants & living things

Lesson Plan on Photosynthesis

A 90-minute Grade 6 biology lesson plan teaching the process of photosynthesis through explanation, a simple experiment, and a worksheet.

Answers included
File
PDF
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Potential Energy Experiment Activity teaching resource preview
Forces & electricity

Potential Energy Experiment Activity

Guide students through a hands-on physics experiment testing how the speed of objects rolling down an inclined plane relates to potential energy.

File
PDF
Level
4–10
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Quick + Easy Science Experiments teaching resource preview
Experiment collections

Quick + Easy Science Experiments

A packet of 4 hands-on science experiments using everyday classroom items, teaching young learners to make predictions and record observational data.

File
PDF
Level
Pre-K, 1–2
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