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Grades 3, 4 and 5 - Computer Science - Elementary School - Algorithms - Introduction
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Avg score: 84% Most missed: “Which one of these is an algorithm?”

Computers are machines. They use electricity to make decisions. Computers have to be designed and built. Then when they are built, they have to be told what to do. That’s where algorithms come in. The definition of an algorithm is a list of steps to solve a problem or to get something done.

Grades 3, 4 and 5 - Computer Science - Elementary School - Algorithms - Introduction
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10 Questions

1. Which one of these is an algorithm?
2. There is a big red square painted on the school playground. Mrs Smith is a teacher. She takes her class out to the playground. Mrs Smith gives instructions about how to walk once round the big red square.

Mrs Smith asks Alice to stand at one corner of the big red square. Mrs Smith tells Alice to walk to the next corner of the square. She then tells Alice to turn right.

What is Mrs Smith’s next instruction to Alice?
3. How do you write an algorithm?
4. Connor is writing down a simple algorithm. He writes down all the steps. The steps must be:
5. Luke thinks about getting up in a morning. He writes an algorithm. Luke writes down the steps, one by one.

The first step he writes down is: ‘Wake up’. What is the next step?
6. Luke writes an algorithm just for brushing his teeth. Which one of these steps does he write down first?
7. Which one of these spellings is correct?
8. Computers can be told how to do sums. Which one of these is a sum?
9. Algorithms help us to solve problems or get things done. Algorithms are a list of _____.
10. Computers need algorithms to work. They need to be told the steps to make things happen.

An algorithm is like a list of instructions. But it’s not just computers that need instructions. We do, too.

Which one of these everyday examples is an algorithm?