This Computer Science quiz is called 'Coding - Introduction' and it has been written by teachers to help you if you are studying the subject at elementary school. Playing educational quizzes is an enjoyable way to learn if you are in the 3rd, 4th or 5th grade - aged 8 to 11.
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We have looked at examples of algorithms. Once you have your algorithm written down you have a simple plan. It has steps in it. But computers and robots cannot understand what you have written down. They only understand codes. These codes can be words, letters or numbers. They are like a special language. So you have to take each step in your algorithm and turn it into code. Codes make up units. Then we use these units when building scripts. Scripts can run programs. Programs have a lot of code to make a computer do a job.
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