This is a set of alphabet and number cards. It includes a set of upper case letters, lower case letters, numbers 0-9, and math symbols for addition, subtraction, division and multiplication, as well as an equal sign. There are also five blank frogs you can customize for yourself. There are multiple uses for these cards. Use them in a center for letter and number recognition, matching upper and lower case numbers. They can be used as flash cards. The number set can be used in a math center to practice basic facts. I use the letter cards in my fourth grade classroom to create a giant keyboard attached to poster board. The students then use this giant keyboard to practice their spelling words for the week.