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

Physical Science

Life Cycle of Butterflies– Lesson 3: Learning More About Caterpillars

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

Physical Science

STC Literacy Series™: Comparing and Measuring

Ecosystems– Lesson 7: Joining Terrarium and Aquarium

Earth & Space Science

Ecosystems– Lesson 2: Setting up the Terrarium

Earth & Space Science

Smithsonian Science for the Classroom Grade 3 Life Science Cover

What Explains Similarities and Differences Between Organisms?

the blue cover of grade 3 physical science teachers guide

How Can We Predict Patterns of Motion?

Physical Science

Floating and Sinking– What Do We Know About Floating and Sinking?

Physical Science

STC Literacy Series™: Sound

Plant Growth and Development– Planting the Seeds

Purple teachers guide cover of kindergarten earth and space science

How Can We Be Ready for Weather?

Earth & Space Science

Explore Smithsonian: What can we Learn from Lion Poop?

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Grade 3

Grade 4

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Life Science

STC Program: Rocks and Minerals Unit Kit, 2nd Edition

Tami's Tower: Let's Think About Engineering title screen

Tami's Tower: Let's Think About Engineering

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Grade 1

Grade 2

Kindergarten

Engineering Design

Life Cycle of Butterflies– Literacy Integration: Nonfiction 1 - Multiple Intelligence Retell

STC Program: Sound Unit Kit, 3rd Edition

Sound– Lesson 8: Making a Model Eardrum

Physical Science

STC Literacy Series™: Chemical Tests

Soils– Organizing the Distribution Center

Earth & Space Science

Which Force Is With You? A Motion and Design Lesson Cover Image

Which Force Is With You? A Motion and Design Lesson

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French

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Grade 3

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Title screen for the educational life science game, Morphy.

Morphy

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Grade 3

Grade 4

Grade 5

Life Science

STC Program: Balancing and Weighing Unit Kit, 2nd Edition

STC Program: Comparing and Measuring Unit Kit, 3rd Edition

Teacher Tips: Weather

This is a free resource

Earth & Space Science

Sound– Lesson 9: Making Sounds with Strings

Physical Science

How Can We Predict When the Sky Will Be Dark?

How Can We Predict When The Sky Will Be Dark?

Earth & Space Science

Sound– Notebooking

Physical Science

Land and Water– Lesson 2/3 The Water Cycle: Modeling Land and Water

Earth & Space Science