Review on 🧩 Magnetic Questions Challenge Tangrams: An Interactive Educational Tool by Jose Brunson

I bought this for my 4 year old to take with me on a long trip. The book is compact and easy to carry, but the book or case has no "bottom" so the magnets stay in place when closed. They can detach or shake off and fall out of the book, but we haven't lost a single piece yet. The sample shapes are black icons only and do not show what shapes you can use. I think it's an idea for a bigger puzzle, but useless for additional instructions.