SamizdatMath

This is not the worst 15 minutes of your life, but if you're teaching division, it will confirm that you're probably doing your students a great disservice if they're not dealing with division problems on a regular basis that have remainders, and, more importantly, depending on the context, the remainder can be used to round the answer up, round it down, be discarded in its entirety or absabadutely must be included in the answer. I know it's all confusing, but this video uses concrete models (we

This is the best 15 minutes of professional development in mathematics you are likely to get. It explains in detail the three different types of division models, using concrete examples, that you should be introducing to your third grade students, or reviewing with your 4th, 5th & 6th grade students. It is incredibly important, because without this knowledge, your students will be unable to do the following: • Solve a word problem (because the keyword approach is nonsense.) • Divide fractions