I remember my father trying to teach me math with flashcards.. also when I was 4. He had read about some children that could add.
I could not. i could not even recognize the numbers. I knew my name started with an "L". I could count to 10. I could count items if they were in front of me.
he would get so upset that i just could not learn to even read numbers, much less add them. He would yell, become frustrated.. It was scary to me..
Your daughter is going to kindergarten to learn her numbers, letters, social skills. etc.. That is what school is for.
Teachers are trained to teach.
The best way for your child to prepare her for kindergarten is to play and to be read to.
Your husband should spend at least an hour each day playing with your child. With blocks, dolls, playdo, little cars, coloring (not in the lines), dress up, pretend, swinging, jumping..
Take her to story time at the library, at a book store, so that she can learn to sit and listen..
She should know her basic colors.
She should know the letters of her first name.. maybe even be able to write her name.. not perfect..
Be able to count to 20 or above..
Draw a human face (not perfect) but put 2 eyes a nose etc..
Potty by herself.
be able to wash her own hands.
She should be able to be given 3 instructions and complete them.
Example. "Honey, we are going to the store, please help me find my car keys, get us each a bottle of water and put on your jacket..
Thank you, so much, you are a great help. "
Make her your helper, so she gets used to following directions. Thank her and always use please so that she will also use these manners.
These are the things she will need to know and be able to do.. anything else will be extra..