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.
Pregnancy lasts an average of 280 days or 40 weeks (almost 10 months) from the first day of your last menstrual period (LMP). The first day of your last menstrual period is considered day one of pregnancy, even though you probably didn't conceive until about two weeks later.