What Is a Loop in Coding? Definition and Examples for Kids

A loop is a coding instruction that tells a computer to repeat the same set of steps automatically — over and over — until a condition is met. Instead of writing the same command many times, a programmer writes it once inside a loop, and the computer runs it as many times as needed.

Types of Loops

Most programming languages use two main kinds of loops. A for loop repeats an action a fixed number of times — for example, "jump 10 times." A while loop keeps repeating as long as a condition stays true — for example, "keep walking while the path is clear."

In Scratch, the block-based language many Malaysian kids learn first, a "repeat 4" block wrapped around a "move" and "turn" command draws a perfect square: the cat sprite moves and turns four times without you copying the blocks four times. A single loop can replace hundreds of lines of code — printing the numbers 1 to 100 would take 100 separate commands, but a loop does it in just two or three lines.

Why It Matters for Kids

Loops are one of the first "big ideas" in computational thinking, a skill highlighted in Malaysia's KSSR curriculum and STEM education. Learning loops teaches children to spot patterns and think efficiently instead of repeating work by hand. Kids explore loops hands-on in Algonova coding classes, starting with Scratch before moving to text languages like Python. To see how loops fit the bigger picture, read what is coding for kids.

Curious? A free trial lesson lets your child build their very first loop.