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What's the Difference?
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In this sorting activity, learners play a game in which they try to identify the largest number of differences between two objects.

Symbol Search
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In this environmental activity (page 6 of the PDF), learners identify household products that are recyclable and explore the different types of recyclable plastics.
What's So Special about Water: Absorption
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In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners test if objects repel or absorb water.
River Catcher
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In this activity (located at the top of the page), learners make an easy river strainer and see what they can catch.

Shoe Dichotomous Key
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In this activity (on page 2 of the PDF under GPS: Cactus Activity), learners will develop their own version of a tool used by biologists, a dichotomous key, by collecting all their left shoes.

Biodiversity and Evolutionary Trees
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In this interactive activity, learners analyze seashells to explore phylogeny and evolution. Learners identify similar and dissimilar seashells to create a phylogenetic tree.

Show Me the Money
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In this math lesson, learners make wallets or purses and then participate in a variety of money-related activities. First, learners make their own paper money and paper wallets or purses.

Trash Talkin'
In this activity, learners collect, categorize, weigh and analyze classroom trash and discuss ways that engineers have helped to reduce solid waste.

Guess My Rule
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In this activity, learners play a guessing game to explore classification.

Count Around
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Learners explore their surroundings while reasoning about categories and counting.

Dinosaur Count and Sort
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In this activity, learners sort and count different colored plastic dinosaurs by various attributes including tail length, whether or not the dinosaurs have horns, etc.

North American Endangered Amphibians Card Game
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In this activity, learners can play two card games related to endangered species, specifically North American amphibians.