Lesson 25: Let’s talk about Algorithms

Snack & Chat

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You use code to tell a computer what to do. Before you write code you need an algorithm.

An algorithm is a list of rules to follow in order to solve a problem.

Algorithms need to have their steps in the right order. Think about an algorithm for getting dressed in the morning. What if you put on your coat before your jumper? Your jumper would be on top of your coat and that would be silly! When you write an algorithm the order of the instructions is very important.

Let’s think of some other lists of instructions that we follow in our everyday lives, can you guess what they are?

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Let’s Play a little Algorithm Game

Pretend that I am a robot child and you need to programme me to get ready to go to school in the morning. Let’s come up with a list of steps that I have to follow in order to get to school on time.

Computer Time – Let’s Help Bob the Snail

I’ve got a new game on the computer for you today:

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http://www.mathplayground.com/logic_snail_bob_2.html

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