write a story in how to teach a kid what base 2 is

A large component of computer science is creativity. This portfolio prompt is based on that concept. Pick one of the following 4 choices:

1. Write story that in teaches a 10 year old what base 2 is and how it relates to base 10. 
2. Make a video that in teaches a 10 year old what base 2 is and how it relates to base 10. (The binary hand dance may come in handy.)
3. Write a song that in teaches a 10 year old what base 2 is and how it relates to base 10.
4. Write fan fiction that in teaches a 10 year old what base 2 is and how it relates to base 10.