Maths

Calendar

Class 3

🎯 Learning Objectives

📖 Let Us Begin!

How do you know when your birthday is? How does your school know when to start summer holidays? We use a calendar!

A calendar shows us all the days, weeks, and months in a year. It helps us plan our activities, remember important dates, and know which day of the week it is.

The 12 Months of the Year

No.MonthDaysNo.MonthDays
1January317July31
2February28 or 298August31
3March319September30
4April3010October31
5May3111November30
6June3012December31

Easy Way to Remember Days in Each Month:

"Thirty days has September, April, June, and November. All the rest have thirty-one, except February alone, which has twenty-eight days clear, and twenty-nine in each leap year."

The 7 Days of the Week

Day 1Day 2Day 3Day 4Day 5Day 6Day 7
SundayMondayTuesdayWednesdayThursdayFridaySaturday

A week has 7 days. A year has 52 weeks (and 1 or 2 extra days).

Think about it: If today is Wednesday, what day will it be after 7 days? It will be Wednesday again, because a week has 7 days!

Leap Year

Most years, February has 28 days. But every 4 years, February gets one extra day and has 29 days. This special year is called a leap year.

Examples of leap years: 2020, 2024, 2028. In a leap year, the total days in a year = 366 (instead of 365).

Reading a Calendar

Here is a sample calendar for August 2025:

SunMonTueWedThuFriSat
12
3456789
10111213141516
17181920212223
24252627282930
31
Example
Example 1: Finding a Day

What day is 15th August 2025 (Independence Day)?

Look at the calendar above. 15 falls on Friday.

Example
Example 2: Counting Days

How many days are there from 5th August to 12th August?

Count: 6, 7, 8, 9, 10, 11, 12 = 7 days.

Example
Example 3: How Many Sundays?

How many Sundays are in August 2025?

Sundays: 3, 10, 17, 24, 31 = 5 Sundays.

📝 Key Words

WordMeaning
CalendarA chart showing all the days, weeks, and months of a year
DateA specific day of a month (e.g., 15th August)
WeekA group of 7 days
MonthA period of about 30 or 31 days
Leap YearA year in which February has 29 days (comes every 4 years)
⭐ Key Points to Remember

✏️ Practice Questions

A. Fill in the Blanks
1. A year has months.
2. A week has days.
3. The month after June is .
4. February has days in a leap year.
5. Independence Day (15th August 2025) falls on a .
B. Use the August 2025 Calendar Above
1. What day is 26th August?
2. How many Saturdays are in August 2025?
3. How many days from 8th August to 15th August?
4. What date is the third Monday of August?
C. Multiple Choice Questions
1. Which month has the fewest days?
(a) March(b) April(c) February(d) June
2. How many days are in a leap year?
(a) 364(b) 365(c) 366(d) 367
3. Which of these is NOT a day of the week?
(a) Monday(b) October(c) Friday(d) Sunday
🎨 Fun Activity -- My Special Dates

Write the following dates and find the day using a calendar at home:

1. My birthday: Date: ________________ Day: ________________

2. Republic Day: Date: 26th January Day: ________________

3. Children's Day: Date: 14th November Day: ________________

4. My best friend's birthday: Date: ________________ Day: ________________

5. New Year's Day: Date: 1st January Day: ________________

Which month has the most birthdays in your family? ________________

Want to use this as a worksheet? Switch to the A4 printable view.

Learning Objectives
Let Us Begin!

How do you know when your birthday is? How does your school know when to start summer holidays? We use a calendar!

A calendar shows us all the days, weeks, and months in a year. It helps us plan our activities, remember important dates, and know which day of the week it is.

The 12 Months of the Year
No.MonthDaysNo.MonthDays
1January317July31
2February28 or 298August31
3March319September30
4April3010October31
5May3111November30
6June3012December31

Easy Way to Remember Days in Each Month:

"Thirty days has September, April, June, and November. All the rest have thirty-one, except February alone, which has twenty-eight days clear, and twenty-nine in each leap year."

The 7 Days of the Week
Day 1Day 2Day 3Day 4Day 5Day 6Day 7
SundayMondayTuesdayWednesdayThursdayFridaySaturday

A week has 7 days. A year has 52 weeks (and 1 or 2 extra days).

Think about it: If today is Wednesday, what day will it be after 7 days? It will be Wednesday again, because a week has 7 days!

Leap Year

Most years, February has 28 days. But every 4 years, February gets one extra day and has 29 days. This special year is called a leap year.

Examples of leap years: 2020, 2024, 2028. In a leap year, the total days in a year = 366 (instead of 365).

Key Words and Meanings
WordMeaning
CalendarA chart showing all the days, weeks, and months of a year
DateA specific day of a month (e.g., 15th August)
WeekA group of 7 days
MonthA period of about 30 or 31 days
Leap YearA year in which February has 29 days (comes every 4 years)
Reading a Calendar

Here is a sample calendar for August 2025:

SunMonTueWedThuFriSat
12
3456789
10111213141516
17181920212223
24252627282930
31
Example 1: Finding a Day

What day is 15th August 2025 (Independence Day)?

Look at the calendar above. 15 falls on Friday.

Example 2: Counting Days

How many days are there from 5th August to 12th August?

Count: 6, 7, 8, 9, 10, 11, 12 = 7 days.

Example 3: How Many Sundays?

How many Sundays are in August 2025?

Sundays: 3, 10, 17, 24, 31 = 5 Sundays.

Key Points to Remember
Practice Questions

A. Fill in the Blanks

  1. A year has months.
  2. A week has days.
  3. The month after June is .
  4. February has days in a leap year.
  5. Independence Day (15th August 2025) falls on a .

B. Use the August 2025 Calendar Above

  1. What day is 26th August?
  2. How many Saturdays are in August 2025?
  3. How many days from 8th August to 15th August?
  4. What date is the third Monday of August?

C. Multiple Choice Questions

  1. Which month has the fewest days?
    (a) March(b) April(c) February(d) June
  2. How many days are in a leap year?
    (a) 364(b) 365(c) 366(d) 367
  3. Which of these is NOT a day of the week?
    (a) Monday(b) October(c) Friday(d) Sunday

D. Write the Months in Order

January, , March, , May, , July, , September, , November,

Fun Activity -- My Special Dates

Write the following dates and find the day using a calendar at home:

1. My birthday: Date: ________________ Day: ________________

2. Republic Day: Date: 26th January Day: ________________

3. Children's Day: Date: 14th November Day: ________________

4. My best friend's birthday: Date: ________________ Day: ________________

5. New Year's Day: Date: 1st January Day: ________________

Which month has the most birthdays in your family? ________________