A directory of useful objects found on the web for teaching Maths.

Fraction charts are useful to show fractions and their equivalents. This resource does this using traditional horizontal fraction bars and the pie-chart-style ones.see details …

A variety of online interactive number squares.see details …

Use this resource to model isometric drawing or let children practise with it on a computer or tablet.see details …

When Cliff Stoll sets your homework, there's always an extra lesson.
Potentially a great start to a unit on measurement.see details …

They say the pen is mightier than the sword, and authorities have often agreed. From outlawed religious tracts and revolutionary manifestos to censored and burned books, we know the potential power of words to overturn the social order. But as strange as it may seem, some numbers have also been considered dangerous enough to ban. Alessandra King details the history behind illegal numbers. see details …

Matt Parker and Katie Steckles talk about Semi-Eulerian Graphs (networks).
What conditions are required in a network to follow every edge without repeating?see details …

Matt Parker and Rob Eastaway discuss a couple of probability problems.see details …

An explanation of where the Fibonacci Numbers can be foundin the Mandelbrot Set.see details …

An interactive quiz for drawing lines of the form y = mx + c.see details …

Deane and Rob play a number game in which each one tries to reach 100.see details …

Ever wondered why the Chain Rule is called the Chain Rule? Watch this video to learn about chain drive systems and why I believe they are the origin of the Chain Rule’s name.
see details …

In the mid-20th century we began launching satellites into space that would help us determine the exact circumference of the Earth: 40,030 km. But over 2000 years earlier, a man in Ancient Greece came up with nearly the exact same figure using just a stick and his brain.see details …

What do Euclid, 12-year-old Einstein, and American President James Garfield have in common? They all came up with elegant proofs for the famous Pythagorean theorem, one of the most fundamental rules of geometry and the basis for practical applications like constructing stable buildings and triangulating GPS coordinates.
A succinct history of Pythagoras' Theorem.see details …

This interactive number line is helpful for teaching decimals and negatives.
See also Zoomable Number Line.see details …

This interactive number line is helpful for teaching decimals and negatives.
See also Scrolling Number Line. see details …