How to create a Pixel Art Mystery Picture (editable) showing up in Google Sheets

How to create a Pixel Art Mystery Picture (editable) showing up in Google Sheets/Excel.  You could use it for math and all other subjects. The step by step instructions "How to create a Pixel Art Mystery Picture showing up in Google Sheets"...

Two and Three Digit Addition with Regrouping - Pumpkin, Halloween - Math Pixel Art Mystery Picture, EDITABLE in Google Sheets/ **Excel

Two and Three Digit Addition with Regrouping Math Pixel Art Mystery Picture EDITABLE in Google Sheets/ **Excel If your answer is correct, a Mystery Picture will show up. If the answer is incorrect, the answer will turn red. There are 15tasks. *Best...