Pros:

• Great product especially for students who love solving mathematical problems, as for me as an engineer, when I was a student, I always write engineering formulas endlessly just to master it out, with this mini wipebook.
• For a student, this product is very reasonable, this can be use for long term.
• This is also a great aid to teachers, especially those in kindergarten who has a morning and an afternoon class, teaching made easier, right?

Cons:

• None actually, this is such a great work of innovation.