Dyadic rational

Dyadic rationals are special kinds of numbers that look like fractions. Fractions are like "pieces" of a number - for example, 1/2 means one piece of a number made up of two pieces. Dyadic rationals are special because instead of having two numbers in their fraction (like 1/2), they have large numbers that can also have a decimal (like 6.743). They allow us to represent very small changes in numbers that wouldn't be possible with normal fractions.