You can buy rocket materials relatively cheap from Estes Rockets (www.estesrockets.com). They have expensive rockets, but they also have several that are less than $10. The engines are usually around $10 for a 3 pack, but Hobby Lobby sells these and you can often find a 40% off one item coupon that drops the price significantly.
On one of our rocket launching adventures this week I took out our fancy camera in an attempt to snag some cool action shots. I was not disappointed, as you can see below.
The launch happens so fast that you can't see the "flame" from the engine with your eye. But with a high speed camera it shows up very nicely.
The best part about rocket launching is taking your daughters tromping through a field to recover the rocket. On one attempt the wind took it and we had to hop in the car. The rocket landed on the shoulder of a distant highway! Thus far we've recovered every rocket we've launched!
Rocket launching isn't necessarily cheap, but it's an activity that I guarantee your kids will love!
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