Stage 5: Justify thinking. A vital habit that many students need to solidify is recontextualizing after they solve ...

When counting squares in a grid, don’t stop at the smallest boxes; the bigger ones are hiding too. The rule is simple: In an n × n grid—where n is the number of squares both horizontally and ...

In the mid-19th century, Bernhard Riemann conceived of a new way to think about mathematical spaces, providing the foundation ...

The Bermuda Triangle is one of urban legend’s favourite locations. For decades, the section of the north Atlantic ocean has sparked fear and fascination as the alleged site, and source, of dozens of ...