Not many Lego pieces but still fun
Good birthday present book for 7 yr old. Enough Lego pieces to do the first model only, then you need to dig into your Lego collection for extra bricks. Book contains printed cardboard sheets to construct structures to add to Lego model to set of a chain reaction with see saws, hammers, tyre swings, domino run etc. References to websites for extra inspiration to continue your chain. 7 yr old son requested help but I think he could have done it by himself. He was really pleased with the first model and has left it up so we can add to it.