1. Go to this web site and scroll down to find a whole set of grid-based logic puzzles:

https://www.puzzle-light-up.com/
I can't find a link that just shows all the puzzles, and each puzzle specializes to its own URL. But, I don't want you to only try this light up puzzle, I want you to try others!

2. Spend an hour or so trying them out, then choose one to focus on.

3. Make sure you know how to play the game and try to articulate why you chose that particular one. 

1. In pairs or trios, focus on one grid puzzle. 

   • How will you generate puzzles?

   • What are the parameters?

   • What are the constraints?

2. Remember that design/computational thinking often includes an iterative plan/do/evaluate cycle.

   • First, articulate your problem as precisely as possible.

     • What are the inputs/parameters?

     • What is the output? What properties does it have?

     • What are your resources? 

       • Is it a computational setting, where you must present a solution as a set of instructions for a computer? 

       • Will you try a different setting?

   • Once you have an initial plan, try it out with simple values for the parameters.

   • Evaluate

     • Did it work? 

     • Do you want to revise your plans? Your problem formulation?
       You may decide to switch to a different puzzle if you are finding this too challenging/simple.