From the series Mighty Machines
Concrete Mixers
Reading Level Grade 1Interest Level Grades K – 3Copyright 2007
From the series Mighty Machines
Reading Level Grade 1Interest Level Grades K – 3Copyright 2007
Have you ever wanted to leave your handprint in a patch of wet concrete? You may have wondered how concrete is formed and how it is set down to harden. This introduction offers a glimpse into this process and the giant machine behind it.
