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Lesson 4-3
Measurement & Units

Time Calculation (Hours, Minutes, Seconds)

Master time reading and calculation using adjustable analog and digital clocks. Learn to read times and calculate elapsed time in real-world contexts.

Learning Objectives

  • Read time using both analog and digital clocks
  • Calculate elapsed time between two times
  • Match daily activities with appropriate times
  • Apply time skills to solve real-world problems

Interactive Activities

Adjustable Clock Practice

Interactive Tool

Use adjustable analog and digital clocks to read times like 3:45 and 10:15, understanding hour and minute hands.

Scenario:

Students use adjustable clocks to practice reading different times and understanding clock mechanics.

Method:

Clock Method: Set clock to specific time, read hour and minute hands, practice with both analog and digital displays.

Practice:

Read 12 different times using both analog and digital clocks and record the times.

Time Reading
Analog Clock
Digital Clock

Elapsed Time Calculation

Time Calculation

Calculate elapsed time between two times, such as from 2:10 to 2:40, understanding time intervals.

Scenario:

Students calculate how much time passes between different events or activities.

Method:

Elapsed Time Method: Find difference between start and end times, count minutes or hours passed.

Practice:

Calculate elapsed time for 8 different time intervals and show the calculation process.

Elapsed Time
Time Intervals
Subtraction

Daily Schedule Matching

Real-World Application

Match daily activities with appropriate times, understanding time in real-world contexts.

Scenario:

Students match common daily activities like school (8:30) and lunch (12:00) with their times.

Method:

Schedule Method: Match activities with times, understand typical daily schedule patterns.

Practice:

Match 10 daily activities with their appropriate times and explain the reasoning.

Time Context
Daily Schedules
Time Matching

Time Word Problems

Problem Solving

Solve word problems involving time, applying time reading and calculation skills to real scenarios.

Scenario:

Students solve problems involving time in various real-world situations.

Method:

Problem-Solving Method: Read problem, identify time information, use appropriate time skills, solve and check.

Practice:

Solve 6 word problems involving time and explain the solution process.

Word Problems
Time Application
Real-World Context