Are you looking for engaging Geometry math centers that are no prep for you and that your students will love to use? My first graders loved these geometry centers which let them show what they know without a lot of paper pencil tasks.
What a fun game! Make two dice: one with numbers, and one with colors. Roll the dice, then use dot stamps to make that number of dots in that color on your paper. My adaption would be to have the dice be a doubles dice to practice double math facts