Need an activity that will help students understand 45˚ angles? This activity from BBC is motivating for students and will help them see that angles in 45˚ increments. This should also help them understand angles greater than 90˚ and less than 90˚ so they can identify acute, right, and obtuse. There's even a quiz that students can take after practicing this game and other games at the site. In the game below use the red arrows to scroll to the correct measurement. Then drag the number to the picture.
If the game doesn't work here for you, go to the website and try it.