KET's Everyday Science is funded in part by Kentucky Power and the American Electric Power Foundation and PNC Bank.
Machines help make our lives easier. They do work that we would find hard to do in faster, more efficient ways. A construction site is one place to observe this concept in action. Big machines move dirt and rock to clear the site, then more big machines move beams into place to form the skeleton of a building. In this original video, children learn about different machines on a construction site and the unique work each one does.
This resource is part of the KET Everyday Science collection.
Building is a way of creating. Children use blocks to build structures or move sand in a sandbox to make shapes or roads and valleys. As they participate in these forms of play, they innately use force and motion to reshape matter and problem-solving strategies to make their block structures sturdy.
Observing machines as they work is one way to introduce the concepts of force and motion to children, and a construction site is a place where you can find many big machines. Bulldozers use a lot of force and motion to move large amounts of dirt and rock to make land flat for a building. This is similar to the ways in which children move sand while playing in the sandbox. Cranes, use cables and pulleys to move heavy steel beams, in much the same way children use blocks to build. As children observe and think about the unique work each machine is performing, they can be directed to recognize the ways in which their own bodies perform similar functions. For example, an excavator works a little like the way they use their own arm and elbow when digging. The bulldozer pushes and scrapes the way they push sand as they play in the sandbox.
Making connections like these help children come to a greater understanding of the world around them.
About the Lever: This simple machine has been around for thousands of years. Levers are used to increase force to move objects. They are composed of two parts, the handle and the fulcrum. To move the object, push on the handle. The fulcrum is the point on which the lever balances. Seesaws and bottle openers are levers. A fork is a lever in which your hand is the fulcrum. To demonstrate a lever to your class, take the children to an open area outside.Vocabulary
lever, simple machine, force, motion
Academic standards correlations on Teachers' Domain use the Achievement Standards Network (ASN) database of state and national standards, provided to NSDL projects courtesy of JES & Co.
We assign reference terms to each statement within a standards document and to each media resource, and correlations are based upon matches of these terms for a given grade band. If a particular standards document of interest to you is not displayed yet, it most likely has not yet been processed by ASN or by Teachers' Domain. We will be adding social studies and arts correlations over the coming year, and also will be increasing the specificity of alignment.