I’m a master student in Turkey. I’m researching math textbooks from different counties to compare them for my thesis. However, it is really difficult to find them. I need your suggestions. Or is there anyone who can share elementary math book with me? I’m so greatful if you can. Thanks
Here is a lit review of US math elementary textbooks evolution:
Realistically your question is so broad that I think you need to learn more before you can even ask the right questions. But maybe this will get you thinking.
For example, I would think about restricting your scope to two to three countries and one topic. Maybe...decimals and Turkey, US, France.* Questions to consider could be at what age is the material taught, how consistent is it within the country (I imagine France is more uniform than the US), and what methodology is emphasized (mnemonics, drill, etc.) [An alternate approach might be more around business aspects: cost, selection, publishers.]
*Just an example. Pick something that interests you. I would also look at the approach in Turkey first, to orient yourself, prior to looking at other countries.
FWIW, I would also not lose sight of the similarities. There's a scene in the movie Mean Girls where the heroine says math is her favorite class because it's the same in all languages. This is not 100% true. But it's MUCH more true than history or language. (Based on my personal experience in Turkey.) So in the midst of identifying differences, don't lose sight of similarities, either.