Rotations, flips and slides were big in the 1st grade workbook a kid at my private school was recently using. It all seemed very "duh obvious" to me, at least by 7/8 (
), but it could be a fun early skill for the preschool set. This curriculum used little hand held shape pieces, and had the kid flip (180 degrees), slide or rotate the piece, and then draw it's new shape. Symmetry is math too, and I remember from my own kids' K work, that drawing the second half of a symmetric picture was a recurring theme.
