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Why is My Shadow Shorter Sometimes and Longer Other Times?

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Sound– Lesson 9: Making Sounds with Strings

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Physical Science
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Rocks and Minerals– Lesson 8: Shining a Light on the Minerals

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Microworlds– Unit Preparation

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STC Literacy Series™: Balancing and Weighing

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Curriculum

STC Program: Ecosystems Unit Kit, 3rd Edition

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Life Cycle of Butterflies– Literacy Integration: Fiction

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STC Literacy Series™: Comparing and Measuring

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STC Program: Weather Unit Kit, 2nd Edition

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STC Secondary: Exploring Plate Tectonics

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STC Assessment Guide: Comparing and Measuring

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STC Program: The Technology of Paper Unit Kit

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COSIP.TV: ¡COVID-19! ¿Cómo puedo protegerme a mí mismo y a los demás?

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

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Physical Science
Smithsonian Science for the Classroom Grade 3 Life Science Cover
Curriculum

What Explains Similarities and Differences Between Organisms?

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Life Science
Curriculum

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

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Land and Water– Literacy Integration (Sharing Predictions)

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the cover of Unbalanced Forces Grade 3 Physical Science Trainer Guide
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Unbalanced Forces Grade 3 Physical Science Trainer Guide

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

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