Students use toothpicks (or straws, dry pasta, etc) to model triangles of various dimensions to discover the Triangle Inequality Theorem, a+b>c. This is a fully editable Word Document.
The focus of this activity is to determine if a triangle is possible given the side measurements. You may also want to briefly hint at what types of triangles are created (isosceles, equilateral, right) as a preview, especially for your advanced/curious students.
Each student or group will need 12 toothpicks to complete all of the shapes.