Hear from deep space. Pupils learn how satellites transfer information back to Earth. They learn about three different ways to modulate radio waves and how a satellite sends information with only 0s and 1s. Using sound, class members...

Zero in on an interesting resource involving radar technology. Groups construct a radar sensing unit and learn to calibrate the system. Using the radar system and the Pythagorean Theorem, they calculate distances between objects.

Every second billions of waves-sound waves, radio waves, light waves-pass through or bounce off our bodies. Over time people have developed technologies that make use of these natural phenomena to accomplish their goals such as creating...