Air, air, everywhere, but what's in it, and what makes Earth's air so unique and special? Journey through the layers above us to uncover our atmosphere's composition and how it works to make life possible below. Pupils conduct...

Learners predict changes that will occur in the environemt after trees are cut down around a house. They focus on changes in the hydrosphere, geosphere, biosphere, and atmosphere. By examining the rings in a tree's trunk, they...

Each of the Earth's spheres interacts with the other spheres in predictable ways. Young scientists explore these interactions through a hands-on activity, graphing, and watching a video. They summarize their knowledge in a video or...

Students discuss the different types of ecosystems and the composition of biomes. Working in groups, they define various related terms and make posters of them. Then they explain their posters to the class.

Ecosystem, human body system, weather system. We hear the word system a lot, but what does it really mean? In the activity, pairs or groups of learners discuss how a bicycle is a system and then analyze objects in their classroom and...