This Computer Science quiz is called 'Writing Code - 1' 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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Ella is using a computer to draw shapes. A hedgehog on the computer screen walks round the different shapes. Ella is writing code to get the hedgehog to draw the correct shape on the computer screen. In this quiz, Ella is programming the hedgehog to draw a rectangle. The rectangle must be 30cm long and 20cm deep.
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The hedgehog walks 30cm right across the top of the screen
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The hedgehog turns right, ready to go down the screen
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The hedgehog moves down the screen 20cm. Ella has drawn two sides of the rectangle
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Tricky! If the hedgehog turns left, it will go off the screen in the wrong direction!
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The hedgehog has now drawn another side of the rectangle
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Altogether, a rectangle has 4 sides. The hedgehog has drawn 3 of the sides so far
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If the hedgehog turns right, it is soon facing in the right direction
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The hedgehog is now back where it started
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A rectangle has 4 sides. How many sides has a triangle?
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How much smaller is 15cm than 30cm? - It is half as long
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