You can teach them anything, but they cannot tell you what thing they have learn from you because of the age is too small. Just share your time by playing with them with educational toys, reading books with them, physical exersice etc. many many things you can do and teach.
Thanks for your shares. My baby girl likes to hear ABC song and will sing and move hands together with me. Sounds like a a a aa aa... She doesn't like listening books, everytime when I read to her, she move away and doing other things. I am worrying about her concentration.