Practice addition and subtraction within 20 in a fun and engaging way with these interactive digital mystery pictures for tablets, computers and all interactive whiteboards (SMARTBoard, Promethian, Mimio). Seven Spring theme mystery pictures are included: Bee, Ladybug, Butterfly, Caterpillar, Bunny, Chick and Flower. These make a great paperless math center or whole class activity!Note: An internet connection is required to use this product. FANTASTIC FEATURE #1 – Quick and Easy to Differentiate