Introduction to Triangles provides a very basic understanding of what makes a shape a triangle. Students will be able to recognize the defining characteristics of triangles and break them down into composite shapes. It is a great starter lesson for introducing young students to this subject.

The “Options for Lesson” section of the classroom procedure page offers extra ideas for fun add-ons to the lesson. One idea is to introduce students to Sierpinski’s triangle and consider printing one of them to color.