This activity is best suited to students from years 3-7.

The activity gets students to change their birthday from digit form into code and then swap with a partner to see if they can successfully put it in the correct order.

The website i found is Australian and had many resources and activities explaining the achievemnet standards with each one.

https://www.teachstarter.com/au/teaching-resource/make-binary-code-birthday-card-activity/?plancode=free