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.
Answer: We talk a good game about having nine months of pregnancy. But if you look at it mathematically, there are an average of 40 weeks in a normal pregnancy. If you calculate a month as being four weeks, that makes 10 months of pregnancy in every 40 weeks. The problem with this calculation is that it has 28 day months, which is not the norm in our calendar months. There is also the issue of when you actually are pregnant.