A great resource teachers could use in the classroom to help students when learning about binary is Teach Starter. This website provides teachers with a range of activities and worksheets for all different year levels that are both engaging and fun. For the example, you can use the Binary Code Birthday Card activity they provide and recommend for students in years 3-7.

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