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.
The average human pregnancy is 40 weeks long. However, a pregnancy is considered full term between week 37 of pregnancy and week 42 of pregnancy. Babies born during week 36 of pregnancy or earlier are considered preterm or premature. Babies born during week 43 of pregnancy or after are consider post-term or post-date.