This lesson teaches students how to create different shapes using the pen tool in Scratch by providing scripts to draw simple shapes and having students alter the scripts to create more complex shapes like rectangles, octagons, triangles, and circles. Students are asked to predict the shapes that will be drawn and change variables like pen color and number of degrees turned to experiment with patterns.

1. Lesson Three Creating Shapes

2. Lesson Three In this lesson we are going to be using the ‘pen’ control to create different shapes. We will start with more simple shapes and move on to create more complex shapes and patterns. Set your sprite to the character of your choice. This could be one from the gallery in ‘Scratch’ or you could draw your own using the paint toolbar. Create the following script for your sprite. You will find the ‘pen’ controls in the ‘pen’ tab in the top left hand corner. Can you guess at which shape will be made before you click on the ‘start’ icon?

3. Lesson Three Can you alter the previous script so that you will create a rectangle? We are now going to create a slightly more complex shape. Copy the following script for your sprite: Can you guess the shape that the sprite will make before you click on the ‘start’ icon?

4. Lesson Three Alter the previous script so that it looks like the one below. What do you notice?

5. Lesson Three Your sprite should make the following pattern when you click on the ‘start’ icon. Can you make anymore patterns using squares and rectangles? Try changing the colour of the pen to create different effects.

6. Lesson Three Create the following script for your sprite. We are going to make an octagon using scratch. Before you click on the ‘start’ icon, you will need to change how many degrees the sprite needs to turn in order to create an octagon. Remember, an octagon has 8 sides. Can you now add the ‘forever’ icon to create a pattern?

8. Dodecahedron (12 sides)

9. Heptagon

10. Pentagon