Which section is better in the open class of the first volume of the third grade of primary school mathematics published by Beijing Normal University?
Know decimals. Knowing decimals, the first open class of mathematics in the third grade of primary school published by Beijing Normal University, is good, because it is the first time for students to contact decimals on the basis of mastering the knowledge about yuan, jiao and fen in the second grade, but in real life, students contact decimals more than once, which makes it easier for students to understand and interact with teachers.