These colourful, visual representations of numbers were inspired by a digital clock. The images get more interesting as the numbers increase, so take your time or use the forward button to move on. Click 'About' on the bottom left to get a deeper understanding of the process.
Explore this video and the interactive learning objects to explore the mathematical relationships in three term ratios. The subject of photography is used to connect mathematical concepts with real world problems.
This video tells the story of physicist Enrico Fermi, who was very good at making fast estimations of big number problems. Learn how he used the power of 10 to make reasonable estimates of large numbers (like how many piano tuners in the city of Chicago).