Thanks to their visual simplicity, bar graphs are popular tools for representing data. But do we really understand how to read them? New research has found that bar graphs are frequently misunderstood ...

In the Idea of Limits video, we introduce the idea of limits and discuss how it underpins all of the major concepts in calculus. In the Limit Laws video, we introduce the limit laws and discuss how to ...

Lisa Rodriguez teaches Algebra II and Pre-Calculus Honors and is co-director of the Calculus Project at Brookline High. Credit: Javeria Salman/The Hechinger Report The Hechinger Report covers one ...