Exercises: constant change
posted by: Ms. Martin
23 February 2010
3 Comments
Make sure you have read and understood the notes on for loops before starting these!
You will turn in 1 of these.
Activity 1: Square spiral
Your spiral function should have the following parameters:
- number of repetitions (“size”)
- spacing between repetitions (“tightness”)
- x position of the center
- y position of the center
Activity 2: Round spiral
Same as activity 1, but rounded!
Activity 3: Growing stars
Activity 4: Trees
Write a function draw_tree that takes a size parameter and prints out the following pattern:
Size 3:
*
***
*****
*
Size 4:
*
***
*****
*******
*
Activity 4: Even numbers
Write a function that takes a parameter representing how many numbers to print. Your function should print that number of even numbers.
Activity 5: Target
Write a target function that draws concentric circles. It should take four parameters: a change in radius, a circle count, a pen width and a pen color. For example, the target on the right was drawn by the call target(5, 10, 3, "purple") and the one on the left with the call target(20, 5, 2, "green").
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