building sites

Describes the work of machines used to construct buildings and includes a pictorial glossary.

Covers a wide selection of construction machines, outlining how they work and what they are used for.

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.

Identifies observable push and pull forces in nature.

Simple text and photos of construction equipment explore movement with ramps, pulleys, shovels and scoops, and wheels.

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.

Photographs and simple text describe how friction works such as how friction keeps different things from slipping or sliding.

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.

Briefly describes what goes on at a construction site and some of the equipment used there.