Parents and Teachers: Use the coupon code "summerisclose" to receive 60% off (yes 60) your subscription to MrN 365 (https://mrn365.com). If you choose to renew your subscription after one year, you'll pay the same discounted rate.
Age of the Angles is an awesome application designed to reinforce protractor, angle measurement, and angle measure estimation skills. Practice using a protractor to measure angles in the "practice" mode and estimate angle measures in the "play mode." In the play mode, see how many angle measures you can successfully estimate before exhausting your 100 angle measure limit.