Once your child becomes responsive to external stimuli (which starts at about 3 weeks old) it's okay to introduce baby play mats to them for faster development of their motor skills. (checkpregnancy.com)
Although baby play mats are a smart way to teach and stimulate, not all entertainment should come from a box. (care.com)
Since your baby might endure longer periods on his tummy now, it is a good idea to invest in some sort of baby play mat — if you bought the baby gym separately. (easybabylife.com)