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

Sound– Lesson 9: Making Sounds with Strings

Physical Science

STC Program: Plant Growth and Development Unit Kit, 3rd Edition

STC Program: Electric Circuits Unit Kit, 2nd Edition

Ecosystems– Lesson 7: Joining Terrarium and Aquarium

Earth & Space Science

STC Assessment Guide: Solids and Liquids

STC Literacy Series™: Rocks and Minerals

Life Cycle of Butterflies– Lesson 2: Caring for Caterpillars

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

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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™: Electric Circuits

STC Assessment Guide: Balancing and Weighing

STC Assessment Guide: Floating and Sinking

STC Assessment Guide: Weather

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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Sustainability

Floating and Sinking– Making a Sinker Float

Physical Science

STC Literacy Series™: Weather

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

STC Program: Organisms Unit Kit, 3rd Edition

Animal Studies– Materials Management

Sunlight on the National Mall title

Sunlight on the National Mall

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Grade 1

Earth & Space Science

STC Literacy Series™: Comparing and Measuring

Soils– Organizing the Distribution Center

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

This is a free resource

STC Program: Food Chemistry Unit Kit, 2nd Edition

Organisms– Notebooking

STC Living Materials Order Sheet, Microworlds

Rocks and Minerals– Organizing Minerals

Earth & Space Science