Water Power, Kids Science Kit, Learning Resources About Physics and Engineering, STEM Toys for Science Experiments, Age 8+

Unfortunately a critical component arrived cracked and made the product useless as it could not maintain pressure.

Highly recommend! Quick shipping . Very easy to order, great quality!

This water power STEM toy kit from Thames & Kosmo was a hit with my 7 y.o son and he had lots of fun building and trying out the various water powered toys and had a lot of re-playablity. BUILD QUALITY - Probably one of the best things about this toy is its excellent build quality and the fit and finish of its interlocking parts. - We have brought other similar build it yourself STEM kits for our son in the past and almost all of them are generally plagued either poor quality parts or ill fitting components that not only are difficult for kids, but also compromise the structural rigidity of the toy - We had no such issues with this STEM kit , every component was made with high quality , thick plastic that fit together very well USING/PLAYING WITH IT - Our son was able to follow the simple instructions by himself and able build out the various toys. His personal favorite was the rocket car - The pump mechanism feels solid and is airtight - The performance of the toy depends on how much air you are able to compress/pump in the tube . Our son was had a bit of difficulty compressing the air too much as it required a lot of force and asked us for help because he wanted his car to go 'fast' DISLIKES None really FINAL THOUGHTS Overall is a a very high quality STEP build it yourself kit for kids that they will sure to love and would make a great gift for them. Highly recommended

Broke quickly. Not worth the money.

Grandson loved it! Unfortunately he over pumped it and a part separated from the pumper and could not be retrieved.

I got this for my 7 and 11 year old daughter and son, and they've been having a blast. It's very easy to setup (the water car and water gun take less than 10 minutes each). A few things of note: - When we first tried using the water car, not enough water was coming out. I had to stick a toothpick down the exhaust valve in order to clear out space. Afterwards, the water car was able to traverse my deck - To get some good water pressure built up, my 11yo son could do it just fine. My 7yo daughter struggled to do those final few pumps. Depending on the strength of your kids, you might have to help out - "Rocket car" and "Jet boat" might be stretching how fast these things travel. They do not go fast, but it's still fun. - The size of the water bottle is smaller than you might gather from the pictures. They might hold 8 ounces (which means this is less than half as much volume as a standard 20oz plastic soda bottle) - Fill the water to about half-way as that seems to be the optimal weight/thrust ratio - You have to align the hose such that the end of the hose remains under water (this is important for the water gun and water car). - You obviously have to do this outside. Water will spray all over the place! Thanks for reading, and I hope you found this review helpful!