Third in a set of lessons regarding reservoirs, dams, and hydropower, this involves a two-day hydropower plant simulation. Collaborative groups build, maintain, and finance the plant. The transparency of the reservoir setup can be...

Students document changes in the playground vegetation during the year by making drawings or taking digital photographs of grass, trees, bushes, weeds, and other vegetation. They study how the color of vegetation changes during different...

Seventh graders, after predicting dominant colors foud in their habitat or garden, visit heir area on a monthly basis. They search for colored toothpicks, then graph the results, determining the dominant color for the month.