How to improve the national standard in the training of the experimental class of mathematics in the fifth grade of primary school?

Connect AC like 1 building, so that the shadow part is divided into two triangles: AFC and ACE. In fact, FC is the bottom of AFC, and AB is its height. AE is the base of ACE, and CD is its height. Just add up the areas separately. (Angle b and angle d have right-angle symbols and should be right-angles. )

12* 10÷2+5* 15÷2

=60+37.5

=97.5 (square centimeter)

Where can I find the math answer to the assignment 1

Unit 65438 of the first volume of grade six +0-4 is a handwritten newspaper.

Summary of Mathematics Teachers' Work in the Last Term of Senior Three in 2020

Mathematics Teaching Plan for the First Grade of Primary School: 10 Understanding

Brief introduction of objectification of four diagnosis methods

What are the symbols for mathematical decomposition and synthesis?

Fill in the appropriate unit name in the horizontal line. The height of the desk is about 70______, the thickness of coins is about1_ _ _ _ _, and the thickness of math textbooks is about 8____.

Huangpu district mathematics yimo 20 17

I plan to take the teacher qualification exam this year. I don't know which video to buy. I heard from friends that online library courses are better. I wonder what the price is.

How to carry out effective mathematics classroom teaching activities