"Year, Month, Day" PPT Courseware 2

Description

"Year, Month, Day" PPT Courseware 2

learning target

1. Students understand the time units of year, month, and day, and know the knowledge of big months, small months, ordinary years, and leap years.

2. Cultivate students' observation skills, generalization skills and the ability to apply knowledge to solve practical problems.

fill in the blank:

2 hours = ( ) minutes 180 minutes = ( ) hours

1 week = ( ) day 120 seconds = ( ) minute

21 days = ( ) weeks

It takes one year for the earth to orbit the sun

The moon goes around the earth once in January

The earth rotates once every one day

There are 12 months in one year

Big month (31 days): January, March, May, July, August, October, December;

Small month (30 days): April, June, September, November;

February: 28 or 29 days.

Usually there are three ordinary years and one leap year every four years.

Any calendar year that is a multiple of 4 is usually a leap year.

Years in the Gregorian calendar are counted in hundreds and must be a multiple of 400 to be a leap year.

For example: 2000 is a leap year, and 2100 is an ordinary year.

Which of the following Gregorian calendar years are ordinary years and which are leap years?

1996 1992 1998 1980

1800 2002 2008

Do you agree with the following statement?

(1) There are 365 days in every year. ( )

(2) 24 months is two years. ( )

(3) Xiao Ming’s schoolbag was bought on February 29, 2001. ( )

(4) Some people only celebrate their birthday once every four years. ( )

Think about it:

February 23, 1992 was Xiaohong’s fifteenth birthday, and grandpa would not celebrate his fifteenth birthday in a few days.

(1) Grandpa’s birthday is ( ) month ( ) day

(2) Grandpa is ( ) years old this year

(3) Grandpa was ( ) years old when he celebrated his seventeenth birthday

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"Year, Month, Day" PPT courseware (Lesson 2):

"Year, Month, and Day" PPT courseware (Lesson 2) Part One: Exciting Introduction Recall the knowledge about year, month, and day? There are 12 months in one year. The number of days in February is quite special. Some years have 28 days, and some years have 29 days. There are 7 big months, each month has 31 days,...

"Year, Month, Day" PPT courseware (Lesson 1):

"Year, Month, Day" PPT courseware (Lesson 1) Part I: Knowledge explanation Every day in 2011 is printed on it. What special days are marked on the calendar? What other special days have you experienced? What do you know about the year, month, and day? Observation 2..

"Year, Month, Day" PPT (Lesson 2):

"Year, Month, and Day" PPT (Lesson 2) Part One: Learning Objectives 1. Further understand the time unit year, month, and day, and be able to remember the number of days in each month and the number of days in the whole year. 2. Know the characteristics of ordinary years and leap years. Understand the reason why there is a leap year every four years...

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Update Time: 2024-07-28

This template belongs to Mathematics courseware Western Normal University Edition Third Grade Mathematics Volume 1 industry PPT template

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