Tape down white paper on the tabletop with painter’s tape.
Draw a line down the center and babel one side straight. Label the other side curves.
Sort through the alphabet and ONLY pick letters with one or the other.
Save the letters of the alphabet with both lines and curves for the next time you play.
Slide the letters to the left of the paper.
Invite your preschoolers to begin sorting letters with lines and letters with curves.
Notes
Learning through motion not only stimulates the brain but also improves focus! Having the flexibility to get up and touch each letter is, first and foremost, the way children learn best.