Part 1: Without counting one by one, find the sums by visualizing while counters moving up into the top frame (just like lesson). Part 2: Find the missing part. Part 3: First, study all the facts below. Use your pencil to point to each problem as you study, but do not write anything down yet. Next, when you are ready, quiz yourself. See if you can write the answers to all 16 problems in less than 30 seconds.