asÂ·soÂ·ciÂ·aÂ·tive property. The property of addition and multiplication which states that a difference in the grouping of numbers being added or multiplied will not change the result, as long as the order of the numbers stays the same. For example, 3 + (4 + 5) is equal to (3 + 4) + 5. See also commutative property, distributive property. 1  Facebook.
The most common recommendation is to initially place infants to sleep on their backs for the first 12 months. However, when the infant is able to roll over on their own in to the sleep position of his/her choice than it is fine to leave the baby in that position. My children are now 29, 27, 24, and 11.
Your baby is not being pushed down into your pelvis when you're lying down. However, lying on your side, rather than your back, is the best position for sleep in late pregnancy. Adopting a hands-and-knees position for 10 minutes, twice a day, can help to move your baby into an anterior position in late pregnancy. Ask your birth partner to massage your back. 2  Rock your pelvis during contractions to help your baby turn as he passes through the pelvis. 3  A birth ball is great for pelvic rocking (Simkin and Ancheta 2011) . 4  Adopt lunge positions, either when standing on one foot, kneeling on one knee, or when you're lying on the bed.