Right angles are HARD to teach, am I right?! Here are some strategies we use to try to make it a little easier. First, we like to show them the corners of a square and have them position their arms in the same directions. Then we show them how *not* to make a right angle. No “Yay!” arms (an acute angle with both hands up toward the ceiling) and no “Ta-da!” arms (an obtuse angle with arms out to the sides).
After some explicit teaching about shapes that do and don’t have right angles, we use Morgan Clark’s memory game.
Then we created this worksheet for students to count how many right angles a shape has and draw shapes with a given number of right angles: tricky skills to master.
Finally, we have these handy-dandy right angles.