Jonny Heeley, a British math teacher, has been featured in The Guardian, and recordings of his masterclasses can be found around the Internet. It's easy to see why he is so popular. Heeley's fast-paced, inclusive, and laid back style is both entertaining and educational. On this page from Teachers TV, readers will find seven of Heeley's masters math classes. The videos range from 15 to 30 minutes in length and topics range from averages to algebra to probability. Students are brought straight into the mix. For instance, in the Equations video, Heeley hands out tee shirts with numbers, letters, and operations symbols. Then he brings students up to form equations, and uses the momentum to teach increasingly complex ideas. For any math teacher looking for inspiration, or anyone who just loves to watch great teaching in action, this site is as worthwhile as it is fun.