Some advantages of blended learning, particularly at a Kindergarten to grade 12 level of education, can be found under the general concept of educational technology. It is also one of the most effective ways for Personalized learning at scale.
The length of a human pregnancy can vary naturally by as much as five weeks. Credit: Â© Jessmine / Fotolia. The length of a human pregnancy can vary naturally by as much as five weeks, according to research published online August 7 in the journal Human Reproduction. Normally, women are given a date for the likely delivery of their baby that is calculated as 280 days after the onset of their last menstrual period.
A pregnancy is considered full term at 39 weeks. This means it's best not to schedule your baby's delivery before that point unless there's a medical reason to do so. On average, pregnancies last about 40 weeks (280 days) from the first day of a woman's last menstrual period.