Called the Eight Wonder of the World by some and the Big Ditch by others, the Panama Canal is indeed an engineering marvel. The long, complicated, and sometimes controversial history of the canal is captured in a presentation loaded with...

Learners discover fascinating facts about the Great Pyramid of ancient Egypt and construct a scale model of the pyramid with this fun activity worksheet. 

There's a lot content packed into the four lessons of this physical science unit on density. From salad dressing to the water cycle and hot air balloons, these lessons engage students in hands-on activities that explore real-world...