Save guides, add subjects and pick up where you left off with your BBC account. The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate ...

THIS work of Prof. Smith's has a “very practical purpose,” viz, “to present in simple and intelligible form a body of geometric doctrine, acquaintance with which may fairly be demanded of ...

The model is inspired by the Navajo Math Circles project initiated by Tatiana Shubina, the Masters of Mathematics for Teachers program created by Barbara and Brian Forrest, and by hundreds of ...