Zero may be nothing, but it's essential to learning math! Discover how to teach zero to kids through these fun and engaging math activities.

Q: Our 10-year-old son has struggled with math at school and complains about it a lot at home. We worry that our daughter, a third-grader, is picking up from him the idea that math is hard and boring.

Started by CU Boulder applied mathematics Teaching Professor Silva Chang, Colorado Math Circle is celebrating 20 years of bringing middle and high school students together in a community that has fun ...