Reinforce your baby's growing understanding of cause and effect while in the bathtub. Show her that a cup can be filled with water and then emptied, and then demonstrate how several small cups can be filled from one bigger one. Once she's hooked on this activity, you may just have a budding chemist on your hands.
As your baby becomes stronger and more active, bath time may become more challenging. Remember that it only takes a few inches of water for a baby to drown. Also, a bathtub seat is not a substitute for adult supervision when a baby is in the tub. When a baby is unsupervised in a seat, he can tip the seat over, slide into the water through the leg openings and climb out or become trapped; all of which could lead to drowning. The Consumer Product Safety Commission warns that children can drown quickly and silently in a small amount of water