More than 70 percent of our world is covered in water. But how did it all get there? Oceans and lakes formed over millions or even billions of years, and they are always changing. Explore… More →
Grade 6 - 9
Lights flash and music blares at a rock concert. There's a lot to learn about light and sound. Explore how these forms of energy come in waves and examine what else is similar and different… More →
Everyone has to have money to buy the things they need and want. But how do you get money in the first place? Learn all about making money. Discover different types of jobs, ways to start a… More →
Most people need money, they may use credit cards or take out loans. But what exactly is credit, and how does it work? Learn all about managing credit. Discover different types of credit, the More →
Metals and nonmetals make up almost everything in our world. They represent the two biggest sections on the periodic table of elements. But what exactly makes a metal? How are nonmetals… More →
Pool tables, shower tiles, and pizza stones all have something in common--they are all made with metamorphic rocks! But what do you know about these rocks? Dig deep below Earth's surface to… More →
Mountains and Cliffs
Mountains and cliffs tower over the land around them. Many formed over thousands or even millions of years and are still changing to this day. Explore more about these landforms with… More →