The Online Teacher Resource
Receive free lesson plans, printables, and worksheets by email:
Note: This part of our site requires a java-enabled browser.
You have a parking lot that has 25 lights. Your goal is to get all 25 lights to turn on. The problem is that the lot wasn't wired correctly. Everytime that you turn on a light, adjacent lights will change their current position. See if you can figure out how to turn on all 25 lights.