Teaching Division using Inverse Repeated addition and subtraction provided a great segway into inverse operations as students were able to make the connection between multiplication and division on their own. It is great when students can make these connections as you see the lightbulb switch in their head.
Teaching Division with Cuisenaire Rods by Education Unboxed. A quick video about how to teach division using Cuisenaire rods. Division is no problem at all if children are used to doing multiplication with the rods because the "picture" is exactly the same.