http://www.ApogeeRockets.com - This is an introduction to the bulk pack rocket kit called the Maker's Dozen. It has 13 different rockets, so that each student in your classroom can have a unique rocket to call their own. Cool things: 1) all the rockets use the same motors, so you don't have to get separate packs of motors for your students. 2) All the fins have the same span - which is how far they stick out away from the tube. 3) All the fins have the same surface area. This allows you to test which shape might be better by flying higher or faster. 4) All the rockets are individually packaged, so distributing them to the classroom takes minimal amount of time. 5) Colorful vinyl decals are included. Finishing supplies, like paint, are not included. The rockets are all classified as Skill Level 1, which means they are easy to build. It is a good "first rocket" if you're working as a good with an adult supervisor. To measure altitude, you'll need an altimeter (not included). We recommend the AltimeterOne, which you'll find on our website. Note: Display stands are not included. But we do have them available on our website.