Depending on the age of the child, this might be a tad abstract approach.

Hello! What does "the brochure" mean in this context?

Unfortunately my experiences are mostly negative - having a forum and maybe a single task there (write something, respond to another student) was not sufficient to get people actually using it.

This is true, but unfortunately does not really answer the question.

This sounds like an interesting and ambitious project; good luck! I do not unfortunately know the school context you are doing this in so as to give any advice. At least some USA people use similar kinds of course names; maybe that?

@JustinHancock please answer as an answer

@user58697 If the words referring to the same concept have a mathematically different meaning in different languages, then that is interesting.

Those are good questions. I also like to suggest minus pi and ten plus pi. (The concept is mostly used on the first few grades, so these questions, while fun, are not relevant.)