Geoboard Lesson # 2

For the second lesson using Geoboards, I have decided to work with similar and congruent figures. This is a topic that is best taught using visual aides. It is quite impossible to teach without the use of visuals. First, the lesson would begin with a general direction to students such as: Everyone make a square on your Geoboard. Then, attention would be brought to the fact that the squares that the students made looked different, while others looked the same. As a class, these discoveries would be examined. Next, the class would come up with examples of acceptable definitions for similar figures and congruent figures. Several practice round would assess student understanding.

At this point, students would be split up into groups. Using dice, students will be prompted to create similar figures if they roll an odd number or to create congruent figures if they roll an even number. Each student will take turns rolling the dice, creating a figure, and watching as their partner creates either a similar figure or a congruent figure.

The lesson would end with a reference to the concept of probability that the dice incorporated into the lesson to be explored further at a later date.