Number Sense : This link has a really great list of different games and activities that can be used to enhance number sense in children. There are also some free printable that go with the activities. These are fun ideas to have in a math center.

Students would have a cup filled colored counters. They should shake it up and dump it out to count the red counters and yellow counters. This teaches cardinality, as well.

Number sense activities for Kindergarten. Make it yourself and no prep ideas to help students learn numbers to

Race to Fill the Cup! Preschoolers roll a dice and count the number of objects to fill the cup. The first to fill the cup wins!

Fun and easy number sense game! Use up the holiday erasers!