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Floating and Sinking– How is Salt Water Different from Fresh Water?

Physical Science

Cover of the How Can We Protect Animals When Their Habiatat Changes? Grade 3 Engineering Trainer Guide

How Can We Protect Animals When Their Habitat Changes? Grade 3 Engineering Trainer Guide

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Engineering Design

Sound– Lesson 10: Changing the Pitch by Changing the Tension

Physical Science

Electric Circuits– Making a Filament

Physical Science

the cover of the Properties of Matter Grade 5 Physical Science Trainer Guide

Properties of Matter Grade 5 Physical Science Trainer Guide

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Physical Science

Yellow cover of grade 3 engineering teachers guide How Can We Protect Animals When Their Habitat Changes?

How Can We Protect Animals When Their Habitat Changes?

Engineering Design

Motion and Design– Lesson 1: Designing Vehicles: Getting Started

Physical Science

Floating and Sinking– Making a Sinker Float

Physical Science

Motion and Design– Safety with Building Pieces

Physical Science

Sugar Simulation screenshot

Sugar Simulation

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Grade 5

Physical Science

Sound — Lessons 1-4: Materials

Physical Science

Motion and Design– "The Explore Build" Extension Activity

Physical Science

Sound– Lesson 1: Thinking about Sound

Physical Science

Mini Golf Motion Title

Mini Golf Motion

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Physical Science

yellow cover of How Can We Provide Freshwater to Those in Need?

How Can We Provide Freshwater to Those in Need?

Engineering Design

Sound– Notebooking

Physical Science

Motion and Design– Using Cooperation Cups

Physical Science

Ouch I Need A Bandage activity cover

Ouch! I Need a Bandage: Designing, Constructing, and Packaging a Bandage

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Grade 1

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Grade 4

Engineering Design

Sound– Lesson 8: Making a Model Eardrum

Physical Science

Sound– Lesson 9: Making Sounds with Strings

Physical Science

Cover of the Grade 3 Physical Science trainer guide

How Can We Predict Patterns of Motion? Grade 3 Physical Science Trainer Guide

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Physical Science

cover of the Earth's Systems Grade 5 Engineering Trainer Guide

Earth's Systems Grade 5 Engineering Trainer Guide

This is a free resource

Engineering Design

Cover of Smithsonian Science for the Classroom with yellow background and 12 images in circles with tiger stripes, insect, fossil, and animal crossing sign.

How Can We Protect Animals When Their Habitat Changes?

Engineering Design

A lighthouse between two palm trees

How Would You Design a Lighthouse?

This is a free resource

Engineering Design

Floating and Sinking– Which Things Float? Which Things Sink?

Physical Science