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

Physical Science

Sound — Lessons 1-4: Materials

Physical Science

Ouch I Need A Bandage activity cover

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

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Engineering Design

Soils– Reading Resource Extensions

Earth & Space Science

Cover of the Cool to Cary activity with three different designed cups.

Cool to Carry

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STC Program: Land and Water Unit Kit, 2nd Edition

STC Literacy Series™: Animal Studies

Life Cycle of Butterflies– Literacy Inegration: Nonfiction 2 - Multiple Intelligence Retell

Explore Smithsonian: What External Adaptations do Pandas Have for Their Unique Diet?

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Life Science

Organisms– Literacy Integration

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

Physical Science

Rocks and Minerals– Lesson 2: Observing Rocks- How are They the Same and Different?

Earth & Space Science

Life Cycle of Butterflies– Lesson 2: Caring for Caterpillars

STC Literacy Series™: Weather

Explore Smithsonian: Dr. Avi Loeb - Jr. Professor of Science

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Education

Explore Smithsonian: How do Scientists use Electricity to Study Fish Populations?

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Life Science

Sustainability

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

Physical Science

STC Literacy Series™: Plant Growth and Development

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

STC Literacy Series™: Land and Water

STC Program: Motion and Design Unit Kit, 2nd Edition

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

STC Program: Magnets and Motors Unit Kit

Life Cycle of Butterflies– Lesson 8: Observing the Crysalis

Ecosystems– Lesson 2: Setting up the Terrarium

Earth & Space Science

STC Assessment Guide: Soils

Teacher Tips: Weather

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Earth & Space Science

Sound– Lesson 2: How Sound Travels

Physical Science

STC Assessment Guide: Changes