Part 1: What Can Gears Do?

There are many different types and sizes of gears, and each one does something a little unique from the others. Today, we are going to explore and experiment with four different types of gears, along with pulleys. To do that, we need to build a few contraptions to help us learn a little bit more about what gears can do. Fortunately for us, we have LEGO WeDo kits to help us do that. Here's what you need to do.

Open "LEGO Education WeDo," if it isn't open already. The icon looks like a yellow box with a green triangle inside of it.

In the top-left corner, click on the yellow LEGO brick to open the Activity Tab.

Each icon in the Activity Tab features a different activity to help you learn more about WeDo and the different parts and pieces. Each group will build and program one of these models in the Activity Tab. The models we'll be exploring are:
Once you click on a model, you will see a screen showing you what the model looks like, and how to program it.

To see the pieces that you'll need to build the model, Click on the triangle on the left side to pop out that box.

The pop-out box on the right side gives you programming hints.

Once you've finished building your model, program it using the commands on the bottom of the screen, and make sure your program matches the program in the Activity Tab.

Once the models are all built, we will demonstrate each one for everyone to see. As we see how each model works, let's think about the properties of each arrangement of gears (or pulleys). Some questions that you might ask are:
  • What does it look like?
  • What does it do with the energy produced by the motor?
  • Can it transfer energy to another object?
  • Can it transfer energy in a different direction?
  • Can it be used in input energy? Output energy? Both?
We're going to use the Properties of Gears worksheet below to help us organize our thoughts.