Count by threes and put a square over each multiple of 3.
Hit the T (text) button to be able to move the squares.
Pull the squares from the pile on top of the 3's and put them on top of the multiples of 3.
Students will edit this template:
𝕁𝕖𝕟 ℍ𝕒𝕣𝕕𝕚𝕟𝕘 @𝕄𝕣𝕤𝟛𝕣𝕕ℍ𝕒𝕣𝕕𝕚𝕟𝕘