Radio waves are all around us! How do they transmit sound? Using an interactive, scholars examine how songs travel through the air. The resource explains the process from the radio station, to signal towers, to the radio unit. A look at...

Do radio waves create light? It's more difficult to understand the things we can't see than those that we can. The simulation compares the relatively small range of visible light to the entire electromagnetic spectrum. It graphs the size...

Cancerous tissues contain more water than normal tissue, which causes the cancerous tissue to resonate longer on the screen and be seen. High school learners can see how MRIs detect tumors in someone's head. Radio transmitters emit their...

What happens to radio waves, time, and light in and near a black hole? Young scientists explore what is known about observing frequency and time at various distances from a black hole. They control the size of the black hole and the...

Students consider the purpose of talk radio and examine its importance in the new democratic Iraq. They enact mock talk shows based on current events and reflect on the value of free speech and the role audience members play in radio...

The Mars Global Surveyor spent two years creating a mineral map of the planet Mars using thermal emission spectrometry. To help young astronomers understand this remote sensing instrument, have them simulate how data is collected and...

Students identify the challenges encountered by astronauts in operating a planetary rover. In this space science lesson, students create a rover using their team members. They follow a command sequence from the driver and navigate...

Students differentiate refracting and reflecting telescopes. In this earth science lesson, students explain how they are closely connected to satellites. They complete the concept map at the end of the activity.

Students recognize that a man's actions in changing his environment can have drastic results for their world. They discuss the use of energy conservation and the use of recycling materials to improve our environment.