NASA
Down to Earth
There are only 10 types of people in the world: those who understand binary and those who don't. The lesson includes four activities in which students learn binary, convert binary to images, understand CCD arrays, and interpret...
Texas Education Agency
Texas Gateway: What Are Telescopes Used For?
Scientists use telescopes to study the various components of the universe. How do telescopes work? Learn here about the electromagnetic spectrum and the various types of telescopes.