Kindergarten ABC worksheets should have different activities to help children identify the various letters of the alphabet. The activities may involve very simple things like colouring, ticking, drawing a line to match items etc. Using attractive illustrations and cartoon characters would make it more fun for children. The activities should be graded, i.e initial activities should be very simple and easy (but should be fun with good pictures etc, so as to interest the child); later worksheets may involve a little bit more work.
Now that we know the benefits of mathematics what is needed to conquer this hard to tackle and arduous subject. Answer is quite simple actually, practice, a lot of practice from early childhood. But in order to perform any task or practice any task, one requires resources. Obtaining a resource is not difficult in todays modern world but affordable resource is definitely a rare commodity. Today education is a sector which gets very little funding from the federal government.