Can you tell how tall someone is just by looking at their feet? In this activity, young mathematicians measure their height, arm span, and foot size, graph their findings, and answer questions about how these measurements are related....

Students observe, measure, and communicate while observing water convert from a solid to a liquid and back again. In this solid and liquid lesson plan, students answer questions as they observe this change.

Students discover how and why the settling rate of particles differs with the size of the particles. Using different soil samples, they calculate the amount of time it takes for a sample to settle in water for up to forty minutes. They...