Category: Children & Young Adult Reading
You could do everything that the machines in this book do. For some of the jobs, of course, you’d have to get friends to help you. But people have always been able to work and build wonderful things, using just their muscles. And they can do a very great deal more when they us...
Tractors themselves come in many sizes and shapes. Some are built very high off the ground so they can pass over tall crops without hurting the plants. Some have four wheels tha...
1. Part 1You could do everything that the machines in this book do. For some of the jobs, of course, you’d have to get friends to help you. But people have always been able to work and b...
3. Part 3The most remarkable digger of all is the one you’ll see on the next page. It rolls along a track deep underground until it comes to the place where its operator wants to cut coa...