Not that she can recognize all the numbers, but Baby likes to pour out her che che's Sudoku game and then slots the squares back one by one into the box. As she slots them back, I will ask her to find me a certain number. Fun way for this fella to learn her numbers. And oh yes, the stairs climbing method of learning numbers has proven to be very effective. At 3YO, she can now recognize the number 1, 2, 3, 4 and 5. Why ends at 5? That's because we live on the 5th floor haha! Next time, we have to climb all the way up to the 10th floor and then walk down so that she recognizes the remaining numbers too. Plus it's a fun way of exercise for the girls and they love this style of flexing their limbs!