Set up a demonstration of how gravity can drive the perpetual flow of water during your hydro power unit. Science learners work in teams to make observations and formulate questions about how it works. They compare the model to what they...

At first glance, grassland ecosystems might seem dull and uninteresting, but once you start to explore it's amazing the things you'll find! Through this series of engaging lessons, activities, and experiments, elementary students examine...

The concept of change over time is presented in this history lesson. In it, learners discuss how some things stay the same over time, while other things change. Teams of students research and create a timeline of important events that...