Lesson 1: Concrete
My son made concrete, built two model bridges and tested them to see which one was stronger.
I couldn't be happier with the book Bridges: Amazing Structures to Design, Build & Test (Kaleidoscope Kids), which I purchased to give my son another hands-on engineering experience. With two parents holding engineering degrees, it's only natural that my son would have an engineering mind.
The book begins by describing the three main types of bridges: beam,
arch and suspension. It gives examples of each, explains how they carry
loads and discusses the advantages and disadvantages of each type.
Perfect! The book starts with the big picture, explains in simple
language and builds with each chapter so that kids come away with a
thorough understanding of bridge construction. Although it is written
for educators to use as a spine for group lectures, I just gave it to my
son, instructed him to read it and do any activities he thought would
be interesting. He jumped right in.