Ecosystems are crucial in allowing for the flow of energy. In this collection, learners look at how energy flows from one organism to another through food chains and food webs. With videos, interactives, and worksheets, the material in...

Engineering design-based activities make learning science fun. Young engineers design dams, lifeguard chairs, musical instruments, candy bags, and much more. They also use measurement skills to solve the mystery of the missing pin. Each...

The third unit in a series of four looks at Earth's system responses to natural and human-induced changes. Fifth and sixth graders learn about how living things and ecosystems are impacted by changing climates. They collect data on plant...