Preschool Center: Clothespin cards for counting. Could easily be adapted to word work, alphabet recognition, etc.
Okay, so this has nothing to do with the actual pin, but it made me think of an "Ocean Theme" behavior management board idea. Bubbles above each fish...students "lose a bubble" and place in the bucket if misbehaving..everyone starts with 3 or 4 each morning
What a great way for a Math Centre in Kindergarten and beginning of grade one! Paint a file folder ocean blue, and then on the outside place an envelope with eyes and get your students to place the correct number of eyes (with the help of velcro) on to the octopus' arms!
Make it fine motor too - paint/glue trees on front of container with plastic snap on lids - cut out a hole on top smaller than the size of the pompoms you're going to use - that way, the kids have to poke and push the pompom in which uses some nice finger isolation movements