Lesson 10: Time - Let's learn about clocks and calendars!

For Grade 4 Students (Ages 9-10) - Let's learn to read time, convert units, and solve time problems!

What we will learn today:

In this lesson, you will learn to:

  • Read time on **analog and digital clocks**.
  • Convert between **hours, minutes, and seconds**.
  • Calculate **duration** of events.
  • Solve **word problems** involving time.

Units of Time:

Time is measured in different units. Here are some important conversions:

Conversions:

1 minute = 60 seconds

1 hour = 60 minutes

1 day = 24 hours

1 week = 7 days

1 year = 12 months = 365 days (366 in a leap year)

Activity 1: Read the Time!

What time is shown on the clock? Enter in HH:MM format (e.g., 03:45).

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Activity 2: Convert Time Units!

Convert the given time unit and enter the answer.

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Exercises: Time Calculations

1. How many minutes are in 2 hours?

2. How many hours are in 3 days?

3. Convert 180 seconds to minutes.

4. Convert 240 minutes to hours.

Word Problems: Solve using Time

  1. A train journey starts at 8:00 AM and ends at 11:30 AM. How long is the journey?
  2. You spend 45 minutes on homework and 30 minutes reading. How much time do you spend in total?

You're doing great!

You have completed all Grade 4 lessons! Keep practicing!

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