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Life Cycle of Butterflies– Lesson 1: Getting Ready for Caterpillars

Soils– Lesson 6: How Quickly Do Soils Settle in Water?

Earth & Space Science

STC Program: Land and Water Unit Kit, 3rd Edition

STC Program: Solids and Liquids Unit Kit, 2nd Edition

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

Physical Science

Floating and Sinking– Weighing Floaters and Sinkers

Physical Science

Title screen for the educational life science game, Morphy.

Morphy

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Life Science

Explore Smithsonian: How do Scientists Track and Monitor Blue Crab Populations in the Chesapeake Bay?

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Life Science

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Smithsonian Science for the Classroom Grade 3 Life Science Cover

What Explains Similarities and Differences Between Organisms?

STC Literacy Series™: Chemical Tests

STC Program: Microworlds Unit Kit, 2nd Edition

What's the Code? activity cover

What's the Code? Coding Robot Movements Using Sound

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Engineering Design

STC Assessment Guide: Magnets and Motors

Sound — Lessons 1-4: Materials

Physical Science

Life Cycle of Butterflies– Lesson 2: Caring for Caterpillars

STC Literacy Series™: Changes

STC Literacy Series™: Plant Growth and Development

Floating and Sinking– Investigating Boat Designs

Physical Science

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

Front cover of the What Explains Similarities and Differences Between Organisms? teachers guide with flowers plants and bugs

What Explains Similarities and Differences Between Organisms?

Ecosystems– Material Consideration

Earth & Space Science

STC Program: Balancing and Weighing Unit Kit, 3rd Edition

STC Assessment Guide: Solids and Liquids

Sound– Lesson 8: Making a Model Eardrum

Physical Science

Why is My Shadow Shorter Sometimes and Longer Other Times?

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Earth & Space Science

Animal Studies– Observing Millipedes More Closely

Sound– Notebooking

Physical Science

STC Program: Soils Unit Kit, 2nd Edition

Image of cover of "COVID-19! How Can I Protect Myself and Others?" The main image is an illustration of the coronavirus.

COVID-19! How Can I Protect Myself and Others?

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

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Life Science