The types of algorithms are the different ways of organizing the steps that solve a problem. The three most basic ones are sequential, conditional and iterative. An algorithm can combine all three to solve complex tasks.
The Most Common Types of Algorithms
- Sequential: runs the steps one after another, in order, with no jumps. Example: a cooking recipe.
- Conditional (or selective): makes decisions with "if… then" logic and chooses one path or another based on a condition.
- Iterative (or repetitive): repeats a group of steps several times with a loop, until a condition is met.
Outside the classroom there are other types by purpose, such as search algorithms (finding a piece of data) and sorting algorithms (putting data in order). Almost everything a computer does combines these structures.
Example for Kids
Think of a robot that tidies up toys: first it walks across the room (sequential), asks "is this a toy?" (conditional) and repeats the action for each object (iterative). With just three kinds of steps, it solves the whole task.
Why It Matters for Kids
Knowing the types of algorithms helps kids break any problem into ordered steps, a core computational-thinking skill. In Algonova's coding courses for kids, students practice all three types by building games in Scratch. You can see it in a free trial class, at no cost.
