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 typical pregnancy lasts 280 days or 40 weeks. Pregnancy due date is calculated from the date of the first day of your last period (LMP) plus 280 days.A woman's average menstrual cycle is 28 days from the beginning of one period to the beginning of the next period.alculation: LMP date - (25 days - 28 days) + 280 Days = Pregnancy Due Date. A Real example: June 4 - (25 days - 28 days) + 280 days = March 8. In this example, a woman had her last menstrual period on June 4.