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Why is My Shadow Shorter Sometimes and Longer Other Times?

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Earth & Space Science

Rocks and Minerals– Organizing Minerals

Earth & Space Science

Life Cycle of Butterflies– Lesson 8: Observing the Crysalis

Teacher Tips: Weather

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Earth & Space Science

What's the Code? activity cover

What's the Code? Coding Robot Movements Using Sound

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Engineering Design

Understanding Weather and Climate– Lesson 7: Hurricanes- Destructive Storms

Earth & Space Science

Cover of COVID-19! How Can I Protect Myself and Others? NGSS-Aligned Teacher Companion Guide

COVID-19! How Can I Protect Myself and Others? NGSS-Aligned Teacher Companion Guide

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Explore Smithsonian: How Do Astronomers See the Invisible Parts of the Universe?

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Earth & Space Science

STC Literacy Series™: Technology of Paper, Pack of 8

The Protecting Whales teacher guide cover with a collage of images showing a mother and baby humpback whale, a whale fluke in front of a military ship, a whale fluke, and a whale fluke in front of a cargo ship.

PROTECTING WHALES

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Grade 3

Life Science

Sustainability

microscopic image of a cell

STCMS™: Genes and Molecular Machines

STC Assessment Guide: Sound

Exploring Plate Tectonics– Convection in the Mantle

Earth & Space Science

Soils– Using Alpha Boxes

Earth & Space Science

Cover of Smithsonian Science for the Classroom teacher guide with a blue background and 12 images in circles with bicyclists, magnets, and a tire swing

How Can We Use Patterns To Predict Motion?

Physical Science

Cover for Changing Earth

Changing Earth

Engineering Design

STC Program: Solids and Liquids Unit Kit, 3rd Edition

STC Secondary: Understanding Weather and Climate

Earth & Space Science

Sound– Lesson 8: Making a Model Eardrum

Physical Science

STC Program: Plant Growth and Development Unit Kit, 2nd Edition

Understanding Weather and Climate– Lesson 9: Ocean Currents- Using Thermometer Strips

Earth & Space Science

Organisms– Notebooking

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

Physical Science

Experimenting with Forces of Motion– Materials Considerations

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Physical Science

Title screen for the education life science game, Showbiz Safari

Showbiz Safari

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Life Science

Sustainability

Understanding Weather and Climate–Lesson 9: Ocean Currents-Using the Demo Box

Earth & Space Science

Animal Studies– Materials and Organizations

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

Earth & Space Science

Experimenting with Forces of Motion– The Force of Friction

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Physical Science