This is unit 1 in the first volume of the third grade mathematics of People's Education Press. It is the first chapter of the first volume of the third grade, and it is not very difficult to learn, because I have learned a lot of unit conversion and practical application before, so when I study again in a single second, I have a very good learning foundation.

This part is relatively simple to learn, but there are also some small details worthy of students' attention and attention during the learning process.

First of all, what are the similarities and differences between seconds and minutes? Knowing this problem clearly will make it much easier to learn. As long as you pay attention to the difference between seconds and minutes, and learn and train accordingly, you will soon be able to get started.

Secondly, it is how to read accurately when reading in seconds and on the clock. At this time, you can refer to the method of reading in minutes. The other is the second hand unit, which is similar to the minute hand. 1 minute is equal to 60 seconds.

Let's take a look at the important knowledge points in the part of "understanding of seconds".

1, the longest and thinnest hand on the clock face is the second hand. Go 1 need 1 second, go 1 need 5 seconds, go 1 need 60 seconds.

2. Time units are hours, minutes and seconds, in descending order. Neighborhood rate 60, special rate to remember.

1 =60 seconds, 1 =60.