1. Tap the and use the highlighter pen to mark the first 5 numbers on the chart. 2. Switch to another highlighter and mark the next 5 numbers on the chart. 3. Continue until you have marked all 120 numbers in the chart. 4. Tap the and record yourself skip counting by fives by saying the last number in each group of 5 until you reach 120. 5. Tap 2 times to save and submit your work.