Modelling effects on screen
In this unit pupils learn to enter instructions to control a screen turtle and compare the operation of the screen turtle with a floor turtle. They learn how to write a procedure that 'teaches' the computer a new word and will be asked to write short sequences to produce particular shapes on screen. They understand that screen steps are smaller than floor turtle steps and will be asked to repeat procedures to produce 'crystal flowers' by rotating the screen turtle through 360 degrees. Pupils will be able to apply what they have learnt in this unit when working with shapes and space in mathematics.
A textease file containing 2 procedures: