This 45 - minute block of time has no presentation or curriculum; the content is entirely determined by the parents. (educationworld.com)
We create an opportunity in every teacher's day with a 45 - to 60 - minute block for their kids to work on projects, collaborate, or finish assignments. (edutopia.org)
So three days a week, he would spend 90 - minute blocks with students teaching the subject — at the expense, he says, of other material. (baltimoresun.com)