Learners work as a team in a game of Speedball. They are taught to value the benefits of physical activity as they investigate a new sport. Students successfully participate in a game of Speedball after participating in a drill that...

Students build a robot out of a 3-¿¿ inch floppy disk drive, two floppy disks, and some other miscellaneous supplies. They apply information they gather about electrical circuits from a web-based circuit design program.

Third graders examine the difference between a food web and food chain. They also examine the importance of the sun in a food web and food chain. Students understand what happens when you remove parts of the chain.

Students define the terms estuary and watershed. They conduct an experiment to determine the density differences between fresh and saltwater. They examine the salinity distribution of the Peconic Bay Estuary.

Use this NOVA lesson to discuss the nature of time and the grandfather paradox. Examine time from different perspectives by plotting ages on a timeline, estimating how long a minute is and imagining going back in time to change something...