The first volume of Ig mathematics is divided into two stages: the first step, the second step is in the third stage of junior high school. The first step of ig mathematics is to learn igcse (and other basic courses), and then learn igcse (followed by igcse).

Step 2, finish a2 (it may be more difficult to choose igcse in the future). The first stage of igcse is the second stage. After learning igcse and igcse, you still have to take the ige exam of a2 (English will be supplemented later).