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1. Square Spiral Snap!

   Part 1: drawSquare

   Choose "Make a block" from the "variables" menu

   

2. Choose "Motion" category (blue) and type "drawSquare" for the name of our new block.

   

3. Create an input variable named "side": Click the "+" by the name drawSquare and type in "side".

   

4. Use a repeat block. Drag 'sides' onto this repeat block for the number of times.

   

5. See that our new block is now part of the "motion" blue menu.

   

6. Try out this new block. Draw a square with sides 50.

   

   and a square with sides 100

   

   Now turn 45 degrees and draw another square with sides 150

   

Part 2: squareSpiral

1. Now make another block named "squareSpiral"

   

2. Create a "script variable" - also known as a 'local" variable for squareSpiral.

   

3. Name this script variable "side". Click on the "a" to change the name to "side".

   

4. Set "side" to 5. Use the small black arrow to add the name "side" into the "set" block.

   

5. Drag in your drawSquare block that you created in Part 1. Drag the "side" script variable into the input slot.

   

6. Add in a "change" block. Change "side" by 5 each time a square is drawn. Use the small black arrow to enter "side" into the "change" block. (Dragging in the word "side" won't work here)

   

7. Add a "turn 15 degrees" block also after each square is drawn.

   

8. Run the program. Can you explain this design that is drawn?

   

9. Try spinning other kinds of polygons, like triangles or hexagons.