K5 Learning
The Life Cycle
Studying plant, animal, or insect life cycles? Pair a science unit with a reading comprehension worksheet on life cycles. The passage touches briefly on butterfly, plant, frog, and dog life cycles before prompting readers to answer six...
US Environmental Protection Agency
Building an Model Aquifer
With almost half of Americans relying on groundwater supplies, it is more important than ever to protect aquifers from possible contaminants. Working in small groups, young environmentalists explore this problem as they create an aquifer...