Fibonacci Sunflower 6 (Pen Version) - Click the Flag. Use the Slider to change the number of colours (1-13) used. This version was created to enable me to extend the range of allowable colours without the need for more costumes, so it uses the Pen. In particular I wanted to see the previously difficult to observe and trace set of 13 Spirals in 13 different colours. It will also allow me to see the set of 8 spirals more clearly, and allow the surprising set of 55 Spirals to be seen as 5 sets of 11 colours rather than the other way round.
Created by @gregatku for use in Classes for Kids Unlimited. Yet another follow-up to the Fibonacci Spiral exercise. Here we draw "florets" in ever (slightly) decreasing size using Pen Down/Pen Up with the Scratch Pen. Each floret is drawn after turning the number of degrees that divides the circumference of a circle into 2 arcs that are in the Golden Ratio with each other (the Golden Angle - close to 137.5 degrees).
