Details can be found on the website of Baidu People's Education Publishing House. There are electronic textbooks on it.

Say it roughly.

Pythagorean theorem of the second day. Congruent triangles. Linear function. Inverse proportional function. The judgment of various special quadrangles, and finally learned the weighted average.

Learning quadratic function in grade three, similar triangles.

That's all I can remember. Give it to me. It is handmade.