LEGO: Gravity Drop

描述

孩子們可以用168塊樂高積木建造一個1.5英尺高的刨花板重力下降塔！

Design & Build a Chain Reactions Machine

Following on from Lego Chain Reactions, children can build a 1.5 feet tall chipboard gravity drop tower, with 168 lego bricks!

You can build outside the book as the pegboard structure allows you to customize and expand with LEGO bricks from home.