Kids best learn through hands-on experience, so it’s hard to help them understand how different things are in space. Gravity doesn’t apply in the vacuum of space, and on different planets, you may weigh two times your amount, or only one sixth of it! While you can’t ship your kids off to the moon, you can teach them what it would be like through another medium.

If you don’t have the money to toss at space camp, then the Talking Teaching Solar System Scale is a good place to start. This is a mat that will teach kids 40 fun facts about our solar system. Initially, you will weigh yourself so you can compare your weight on different planets. Each planet you step on will also give you information that has been voiced by the well-known astrophysicist Dr. Neil deGrasse Tyson. This $50 mat needs two AA batteries to function, and can withstand a weight of up to 220 pounds.