From Lined Paper to Equations of Lines; Making Sense of Algebra through Geometry

One of the most valuable tools for understanding algebra and geometry is already in our classrooms; paper. Learn how to use common classroom resources as tools to make sense of angle relationships of parallel lines, properties of similar triangles, and ultimately derive the slope formula, point-slope formula, y = mx, and y = mx + b.

8 to 10

Building Mathematical Knowledge for Teaching