Shodor Education Foundation
Triangle Area
While the lesson focuses on right triangles, this activity offers a great way to practice the area of all triangles through an interactive webpage. The activity begins with the class taking a square paper and cutting in in half; can they...
Curated OER
Triangle Review
In this triangle review instructional activity, students define what type of triangle is being described, then draw a picture of it. A reference web site is given for additional activities.