To make exploring counting patterns more exciting, consider downloading this worksheet.
Students have to count backwards, filling in all the blanks, until they reach zero to make the rocket launch. A variety of different backwards counting patterns are explored (e.g., 2's, 3's, 5's, 10's and more).
The lesson could be introduced through watching a short clip of a NASA countdown, and then providing students with the worksheet.
For example: https://www.youtube.com/watch?v=zRGeLQkWuYk