Many children's concept of a triangle is limited to the familiar equilateral triangle with a horizontal base. In this lesson, students will explore and identify a variety of triangular shapes using ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and to develop students' reasoning with properties of triangle to develop students' ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? This triangle brain teaser isn’t new—shoutout to Popsugar for unearthing it a couple ...