Grade 2
Maya and her classmates draw on materials and gestures as they develop mechanistic explanations of maple seed travel.

Grade 2
Lauren uses a read aloud to help students build from their investigation findings toward an explanation of why cake batter becomes (and stays) solid after being baked.​

Grade 5
Students make claims about what factors matter for decomposition. They use evidence from an investigation to support their claims, and they begin thinking about explanatory mechanisms for why a particular factor matters, making connections to the life cycle of mold.