Picture of A Rocket Eggstronaut Project
I've seen all sorts of Water Bottle Rockets on Instructables and while surfing the web but I thought an Instructable with the step-by-step process of building a whole bunch of them with a class of grade six kids would be good. Each step in the Instructable will be a day in the class. At the top of each day you'll find a list of  tools and materials. Just follow through a day in advance and you'll have kids learning so much more than anyone bargained for.

This rocket is based on the usual 2 liter pop bottle you find at grocery stores. You add water, pressurized air and using these instructions you'll get height that you and your students will not believe. AND to make it interesting... we have a passenger... the Eggstronaut, which is an egg that if survives will award extra marks to the team.

You'll need the basic materials listed below as well as a launcher... Here's a link to a commercial version... i've added a couple of pics of it below as well.


I will design and build a launcher and do an instructable in a few weeks when I get a chance. I have seen all sorts of designs but I'm hoping to come up with something as effective as the commercial one above....
A good hand pump works well but a compressor REALLY makes life easy... you can max the pressure like crazy, too.

Learning Objectives:

-The students will learn and apply Newtons Second Law of Motion in a way that makes sense to them...
"The more massive an object is... the more force it takes to accelerate it" or you could say...
"Heavy stuff takes more force to move"

-The students will learn and apply the basic principles of  Newtons Third Law of Motion...
"To every action there is an equal and opposite reaction" or you could say...
"if you push something it will push back"

-The students will understand Newtons First Law of Motion...
"F=MA" or to make it so I can understand...
"stuff  that is sitting there will stay that way unless something happens to it. Once things start moving they tend to keep moving until something happens to change how it is moving"

-Students will learn to tell the difference between MASS and SIZE

-By building a simple Rocket the students will understand these laws in a way that makes sense to them AND they will learn to think creatively, design and problem solve while building a basic design.

-The students will learn to use basic tools to construct a working project.

Tools and Materials:
-Hot glue gun
-duct tape
-X-Acto or Olfa mat knife
-2 liter pop bottles (NOT water bottles!) get at least 2 of them
-Cardboard or coroplast (the stuff cheap signs are made of)
-batting, foam, paper strips.... whatever you find for the Eggstronaut...

-Scale (as in drawing to scale)

I'll also provide a marking sheet at the end so you can use it in your class.
Right, then. Lets get started...
anjaliv3 years ago
really funny story you said . i like it. you are a good teacher
stumitch (author)  anjaliv3 years ago
Thanks! i love my job!
wilgubeast3 years ago
Awesome! Your write-ups are getting even better, and the pictures with the kids make the project seem like even more fun than rockets are normally (which is pretty fun.) Great job.
stumitch (author)  wilgubeast3 years ago
Thanks! I'm trying to "tidy up" my tendency to ramble in my instructables :-)
glad you liked it!