Skip to main content
### Number and algebra

### Geometry and measure

### Probability and statistics

### Working mathematically

### For younger learners

### Advanced mathematics

# First Forward Into Logo 9: Stars

Or search by topic

Age 11 to 18

Challenge Level

- Problem

First Forward Into Logo

**Previous:** FF8

In FF7 you looked at the following procedures and were invited to alter them at your leisure:

TO POLY :N

REPEAT :N [FD 45 RT 360/:N]

END

TO POLY :N :M

REPEAT :N [FD :M RT 360/:N]

END

Now...two activities:

Activity one:

Consider REPEAT 5 [ FD 100 RT 144] .........what do you think this means? Try to imagine what is happening before entering the procedure into a machine. Imagine being the 'turtle' that creates the graphic....how many times does it turn? Through how many degrees has it turned when it has finished the procedure?

Activity two:

Consider the procedure below. What do you think is happening? Talk through with your friends what you think the procedure is all about. Only then enter it into a machine and experiment with it.

TO GAZE :M :N

REPEAT :N [ FD :M LT 720/:N]

END

Try GAZE 100 5;

GAZE 120 7;

GAZE 200 9;

GAZE 50 8 (Beware maybe not what you think!)

Okay then what about GAZE 150 12?

GAZE 250 16?

Alternatively, you might like to write a procedure for any of these shapes. Walk them first - either in your mind or in the playground. |

You might also be interested in how the shapes were flled with colour.

This needs two new commands:

SETFLOODCOLOUR [:red :green :blue].

This works in a similar way to SETPC described in FF3.

FILL

This is the command that you use to fill your shape with the "Flood Colour" .

One word of warning - you have to be inside the shape to fill it!

**Next:** FF10