## Simple Machines

Simple machines help people do work. "Work" has a specific definition in physics, but a basic way to think about it is that work is making things move. For early learners, we provide opportunities for them to experience the ways that simple machines make moving things seem easier. In these resources, Sid introduces the simple machines of wheels, levers, inclined planes, and pulleys. Children are provided with opportunities to engage in scientific thinking and problem solving using these new tools.

• ## Sid's Amazing Invention | Sid the Science Kid

In this episode of Sid the Science Kid, Sid learns all about the lever, a simple machine used to lift heavy objects.

• ## The Tree House | Sid the Science Kid

In this episode of Sid the Science Kid, Sid and his friends learn about lifting heavy items to high places using a simple machine called a pulley.

• ## Gabriela's Balancing Act- Interactive Game

This lever game demonstrates to students that, for a lever to be balanced, the two sides must have equal weight. Students can experiment with this by adding weight to each side.

• ## The Broken Wheel | Sid the Science Kid

In these Sid the Science Kid segments, Sid learns all about wheels--a type of simple machine--their purpose, and their history.