You can choose subject network, elite network, etc. There are math materials from elementary school to high school. You can search the information you need according to grade, version or knowledge points.
Mathematics in Singapore is practice-oriented, systematic and spiraling in difficulty. There are also questions with different difficulties around each knowledge point, so it is very important to practice and consolidate mathematical concepts repeatedly. Its highlight lies in the combination of abstract mathematics and practical brush questions, which makes children gain a lot in repeated practice.