Magnetic number fishing, they add what they catch! As well as addition, develops hand/eye coordination, fine motor--I love this for magnetic letter fishing too! When they catch a letter, they say its name and sound.
Simple counting activity for children
Counting with pom poms. Here is a simple counting activity for children, especially preschoolers. Simple to set up it can suit individual needs and develops fine motor skills.
Printable number wheel cards
Math Center: Free printable number wheel for number recognition, number matching games, subitising activities and games to learn number bonds to 10 or 20
Learning with Cupcake Liners!
Cupcake lines aren't just for crafts! Use them to practice counting coins! Math with Cupcake Liners: Counting Money Game
Math Center-Sweet Sounds of Kindergarten : Math- Addition Cups! Cups have holes in them so that the manipulative a drop through. The kids use white board markers to write the numbers.