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This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?