Two wonderful students, Savannah and John, helped me make these two videos last week. (One above and one below. The video below is easier to hear.) As you can tell they love recording their thinking. The video illustrates how to teach a frames and arrows lesson on the smartboard. We use an infinite cloning arrow to see the pattern on a numberline. So far we have made two files like this (Grade 2 Lesson 2.10 and Grade 3 Lesson 1.12).
As you will see in the video students pull down the arrows (that have been proportioned to a numberline) to see the pattern. Next they "frame" the numbers on the numberline. Next, they make the rest of the numbers disappear leaving the same pattern as the original question. The last step is to write the answers in the problem.
In the past this was a difficult concept to teach. The smartboard helps alot!