From fractions and decimals to distance and time, the humble-but-versatile number line can deepen students’ understanding of key mathematical concepts.

Prime numbers are the building blocks of mathematics, and yet their distribution is a mystery that has stumped mathematicians for centuries

A prime number is a number that is only divisible by one and itself, which is essentially saying that it has no divisor. That takes half of all possible numbers off the table right away (the evens), along with all multiples of three, four, five, and so on.

The median is the middle number in a sorted ascending or descending list. It can be more descriptive of the dataset than the average. It’s quite different from the mean.

The winning numbers in Wednesday's drawing of the "Illinois Lucky Day Lotto (Midday)" game were: (eleven, twelve, eightteen, thirty-five, thirty-nine)

Here are the winning MegaMillions numbers for April 21, 2026.