I strongly believe that concerning academic knowledge, there is no such thing as “too early” for teaching a child.
Being the nerdy parents we are, we bought the Introductory Calculus For Infants when The Cute was…three months old. I am so glad we bought it. Saved us many a tantrums and gave us tons of quality time with the baby. She loved it and once she could walk, she kept following me around to read it to her. This is her favorite book of all times since she was six months old. And it’s packed with math.
Mathematics is not the only thing this book is about. It actually has a very good story.