Photographs and simple text written in both English and Spanish describe how energy is used at construction sites including how it moves machines, how workers use various tools, and the energy it takes to make trucks go.
Photographs and simple text describe how energy is used at construction sites including how it moves machines, how workers use various tools, and the energy it takes to make trucks go.
Explains what it means to balance, and looks at some of the things that balance on a construction site, including a sawhorse, ladder, scissor lift, and others.
