Through many years of teaching, I have found that elapsed time is one of the most difficult skills to teach students. Whereas some believe this skill is more developmental (you get it when you get it), the standards do not seem to agree. To make matters worse, it never fails that there are elapsed time problems on the state standardized tests. And EVERY YEAR, these are the problems that students always struggle with the most. Then came the elapsed time t-chart—the answer to my prayers!
A t-cha