A freebie from First Grade is Fantabulous!
***UPDATED 1/26/15 to include numbers up to 50.***
Use these letters however you like in your classroom. Some ideas:
Have students match capital and lower case letters.
Have students organize letters alphabetically in a pocket chart.
Have students order number from 1-20.
Have students use objects to represent numbers. Ex: 7 unifix cubes matched to the number 7 card.