K'NEX Infinite Journey Roller Coaster Building Set

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This is a nice set. It doesn't say it is part of the STEM (Science, Technology, Engineering and Math) series but it certainly could be.  Good concepts and very clear instructions.  Of course once it is built and played with the whole set will be folded in with the rest of the K'NEX for even more play.  This is a Pennsylvania company that is very innovative and produces a quality product.  Much like the ubiquitous more well known brand of building toy, you can never have too many K'NEX.  As an aside, the set comes with three rubber bands that seem like they were an afterthought as they were just loose in the box and frankly they look like they were used.  Kind of surprised to see that in this normally high quality set.

From the vendor:

Go back in time with the Infinite Journey Roller Coaster Building Set, from K'NEX. The slingshot launcher sends the coaster car up the hill and spiraling through the track! This set comes with 353 parts, primarily rods & connectors, to build a K'NEX thrill ride! And if you collect the Clock Work Roller Coaster Building Set and Revolution Ferris Wheel Building Set (sold separately), you can have a working amusement park right in your home! Recommended for builders ages 7+.

If reviewing a product, it may have been received free of charge. That will NEVER have a bearing on my recommendations.