Math Really Counts

Video Gallery

2014 Virginia State Mathcounts Team Won 3rd Place in the National Competition:
Wiliam Sun Gave a Speech at the 2015 Math Kangaroo Award Ceremony:
Wiliam Sun Teaches the Sticks and Stones Counting Method and the Geometric Probability:

© Copyright 2017 by William Sun. All rights reserved.

Thomas Jefferson High School for Science and Technology