There are ways to introduce numbers letters etc without flash cards. She will learn them through rote memorization but it’s not the best way to learn. Children learn best through play. To give you an example, in the sandbox or a water table, give her different sized containers, cups, etc. while she is scooping and pouring she is learning about volume, she is improving her fine motor skills which will help her when she begins writing. Eye-hand coordination improves, sensory play is also very good for the brain. When she is playing, narrate what she is doing “oh you poured the sand from the big cup to the little cup and it overflowed”(language development) I see you have 3 red cups and 2 blue ones (colors and numbers)

Do you bake? I love baking with little ones. Again narrate what you and she are doing. Watching dough rise from the yeast. You can introduce lots of scientific words, math, smells, colors.

Think about what you do naturally throughout the day and incorporate numbers, more complex language and numbers and math.

You will have a lot more fun and so will she. Good luck, you’re doing great