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Learners create a small explosion by collecting hydrogen and oxygen gas together and squeezing them into a flame.

In this activity (on page 1), learners role play as atoms to explore how atoms can be rearranged to make different materials.

In this activity, learners observe mixtures of sand samples glued to note cards, and consider how sand can differ in size, shape, and color, and where it comes from.

Learners will explore the scientific mystery behind a disappearing group of trees by examining data and attempting to explain the decline.