This doesn't make any sense.

If Gracie pulls all her right feet off the sticky tape at the same time, why doesn't she fall over?

And why don't her shoes come off at the end when she tries to get off the sticky tape?

The author obviously doesn't understand math at all.

;-)

As someone who dropped out of high school and has mostly survived by reading Stackoverflow, can someone explain the purpose of this? What is the subject matter explaining? Just the idea of the Infinite Hotel?

It is different variations of the Infinite Hotel in a format suitable for kids. It deals more with the idea of infinity in general I think and tries to frame this using multiple examples.

This reminded me of Math Pickle.

Math Pickle (https://mathpickle.com/organized-by-grade/) has a lot of kid-friendly math puzzles that are easy to explain but can become quite intriguing.

I'm looking for posters that are a "bit" like this showing what different math looks like.

Something that a kids would like to look at and explore so they can visualise things like logs, geometric functions, what exponential looks like etc.

I love this so much!