This is an excellent website that can further develop the idea of binary especially the definition in the Australian curriculum.
This website also provides some lesson plans linked to the curriculum and can be useful and fun activities for Year 5 and 6 students to do.
However, it seems not very suitable for my age group (0-8 years old)
I will find something more age-appropriate for my age group student.
In this website mentions patterns, this should be a good start point for my age group children to have the foundational of pattern in order to build their knowledge in the future year.
This is a very well presented website!!!!