Why do I keep getting angry at my slow kid?

Expectations. When things come easily to us we all often are impatient and easily angered with others who we consider "slow". We do not understand why that person has so much trouble and yet we do not know what it feels like to be "slow" and not have things come easily. If we have expectations that are too high we will get angry. Take a break, breathe deeply, count to 10, and try to see life from your child's.