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Title: Loads of fun and educational!
Review: This is a great product. My three boys built it entirely by themselves (ages 9,8,6). My only job was to cut the track at the very end so it was the right length. My middle son did a big project on rollercoasters for school and brought it in for a visual aid. Needless to say it was a big hit with the entire school! We disassembled it at school and as soon as we got home my 6 year old built the Serpent Junior model within the next 24 hours by himself. Now they've spent vacation making their own models (the trains don't usually make it through the track but they have fun designing!) If your kids are competent with K'Nex, they'll love this!
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