ICT at key stages 1 and 2 (Year 4)
Unit 4E: Modelling effects on screen
Section 5: SHORT FOCUSED TASKS
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Objectives |
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- key idea: that groups of instructions can be named
- technique: to use and change a pre-written procedure
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Activities |
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Outcomes |
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Children: |
- Write the following procedures into the computer and save them: square, equilateral triangle, staircase, pentagon. Give the procedures arbitrary names, such as 'Pooh', 'Tigger', 'Eyore' and 'Piglet'. All these sequences have been used in previous lessons.
- Show the children the screen turtle drawing a square, without using the procedure you have written. Then move the turtle using penup and pendown and repeat the square. Explain how it would make things easier if the turtle could learn a word to draw a square. Tell the children that you have taught the turtle four new words and demonstrate the one that draws the square. Show them how they could change the numbers in the procedure to make a bigger square. Divide the class into groups and let them test all four procedures. Ask them to try changing the size of the sides and the steps.
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- learn that sequences of instructions can be named and edited
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Points to note |
Children should see that the name of a procedure could be anything - they are 'teaching' the computer a new word for the turtle. They should understand that the computer does not know the word 'square', for instance, until the procedure has been written.
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This unit is divided into sections. Each section contains a sequence of
activities with related objectives and outcomes. You can view this unit by
moving through the sections or print/download the whole unit.
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