This app provides an interactive visualisation of equivalent fractions by arranging a grid into various groupings, and, when valid, presenting the corresponding fraction and it's reduced form.

In the 1600s, the Dutch East India Company employed hundreds of ships to trade goods around the globe. In order to fund their voyages, the company turned to private citizens to invest money to support trips in exchange for a share of the profits. In doing so, they unknowingly invented the world’s first stock market.

An outstanding (and challenging) video exploring a very different way (using geometry) to solve polynomial equations. It is challenging and rich in ideas - too much for most students in one go (25 mins) but cut up into components would make for a terrific guided investigation.

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