What does Z+Z mean in mathematics? How? There is Z+Z at the back of the math textbook. What does this mean?

Z+Z is a knowledge resource library developed by using Z+Z intelligent education platform. (1) Its content covers every chapter and section of all new curriculum textbooks for junior and senior high schools, and it is systematic and comprehensive. (2) These resources can be used freely with the free version of Z+Z software, which is completely open; (3) Visual display of images ...

How to translate mathematical function images?

Oral arithmetic skills in the first grade of primary school

Synchronous teaching of mathematical analysis

I taught you how to do six problems on page 4/kloc-0 of the sixth grade math textbook and solve them with equations. Please help me!

Two math problems in grade six

Ningxia college entrance examination paper is a national paper.

English Introduction of Mathematics Bridge in Cambridge University

What are the benefits of primary school students learning Olympic Mathematics? What does learning olympiad bring to children?

Subtraction of abdication in second grade

I'm in grade three now, and I want to buy three tutorial books on mathematics and physics. My grades are not very good, and the foundation of 70 points is not very good, so it can't be too difficult.