An even number is a number that can be shared equally into two groups. For example, these 4 cubes can be shared into two equal groups of 2 cubes. So 4 is an even number. An odd number cannot be shared ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. It’s a popular kid’s TV show that teaches ...