Bellow i have attached two useful links that support a classroom or professional development learning activity about binary.

The digital teach hub includes a curriculum definition, video resources and lesson ideas. Inside of the lesson idea links they provide a step by step Learning Sequence including: Learning hook, Learning map and outcomes, Learning input, Learning construction, Learning demo, Learning reflection and Lesson variation

https://www.digitaltechnologieshub.edu.au/teachers/topics/binary

Binary Baubles is a one hour introductory activity where students are introduced to the binary number system, binary to decimal conversion, ASCII and pixel graphics and binary colour representation.

https://aca.edu.au/resources/baubles/