Measurement: Angle and Turn

Angle Matcher

Matches angles concretely. Explicitly recognizes parallels from non-parallels in specific contexts. Sorts angles into “smaller” or “larger” (but may be misled by irrelevant features, such as length of line segments).

Activities

You may see this:

Other Examples:

Given several non-congruent triangles, finds pairs that have one angle that is the same measure, by laying the angles on top of one another.

Help your student become a(n) Angle Matcher

These activities involve seeing, finding, and showing angles that are the same size. A simple but important example is the right angle (e.g., to be a rectangle or square, all the angles have to be the same right angles). This level uses supportive materials, such as congruent shapes (so the angles have sides that are the same length).