【Waterwheel Coaster】Amazing Marble Run Project. Build your own working roller coaster model made of real wood! The Coaster is full of dips and turns with some engineering and physics are thrown–so once you build your coaster, you can run marbles through it!

【Best Pastime Toys and Gifts】Create unforgettable times of working experience on the project. This kit is really cool and fun, maybe together with your wife/husband and kids, absolutely beautiful family time. A super awesome bond, great family ties. Wonderful gifts for Adults, Teens, Family, Friends, or Yourself on any occasion like birthday or anniversary.

【Operation Ways】With the crank of the handle, fire up the gears and watch as the waterwheel coaster carries the marbles up to the top and releases them down the track. This gave you the opportunity to explain gravity, gears, designs, machines, engines, and many other concepts.