For ages 9 to 12 years. You are a child. A really great child. Our future is in your hands. Here is your Fill a gaping hole in the ground (it takes up a whole street) with a tall, efficient, awesome building -- one that will truly scrape the sky. This is a far-reaching adventure filled with real-life experiences that will cause children's hearts and minds to soar. Ages 7 to 13
I read this with my son. It has helped him to understand simple engineering principles. We have done some of the activities in the book, which includes building your own structures. Has been a great tool for teaching my son "how the world works."