Teaching babies stem

Not sure how you will teach science and math to a baby - but when I speak to engineers, they frequently say construction toys (like Legos) inspired their careers. Legos are a good introduction to communicating ideas with physical objects. Putting things together and taking them apart gets kids interested in how things work. In observational studies, kids who spent more free time with puzzles or building blocks scored higher on tests of spatial ability. Which is fundamentals of science. So if I were you I would buy lots of lego sets and puzzles and other types of construction toys.