Elapsed Time Adventures
Learning Objective
Total Time: 5 minutes
Students will be able to calculate elapsed time by determining the difference between two given times.
Assessments
Total Time: 5 minutes
Students will complete a timed quiz where they calculate elapsed time for various scenarios, demonstrating their understanding of the concept.
Key Points
Total Time: 5 minutes
Elapsed Time: Understanding what elapsed time is and how to calculate it.
Analog Clocks: Recognizing how to read and set times on an analog clock.
Real-Life Applications: Relating elapsed time to daily activities, such as how long it takes to complete tasks.
Opening
Total Time: 5 minutes
Start with a quick group discussion: "What time do we usually start school? What time do we go home?"
Show an analog clock and ask: "If it's 2:00 PM and we go home at 3:00 PM, how long do we have to wait?"
Use student responses to introduce the concept of elapsed time.
Introduction to New Material
Total Time: 5 minutes
Introduce key vocabulary: elapsed time, start time, end time, and duration.
Use a visual projector to display a clock showing two different times.
Example: Start time at 1:15 and end time at 2:00. Ask students how to calculate the elapsed time together as a class.
Guided Practice
Total Time: 5 minutes
In pairs, students will take turns using a clock to solve elapsed time problems provided on a worksheet (e.g., If a movie started at 4:00 PM and ended at 5:30 PM, how long was the movie?).
Walk around the classroom to offer support and encourage collaboration.
Independent Practice
Total Time: 5 minutes
Students will complete a short worksheet with different scenarios, calculating the elapsed time for activities like school lunch, recess, and watching shows.
Clear instructions will be provided, reinforcing that they should draw clock hands to illustrate their calculations.
Closing
Total Time: 5 minutes
Review key learnings by asking volunteers to share their favorite elapsed time problem they worked on.
Conduct a brief review game using a timer; flash scenarios like "If it’s 3:00 PM now, and your friend will arrive in 45 minutes, what time will it be when he arrives?"
Extension Activity
Total Time: 3 minutes
For students who finish early or want a challenge, provide story cards with real-life scenarios requiring them to calculate elapsed time and draw a time-line on a blank piece of paper.
Homework
Total Time: 2 minutes
Assign students to keep a time log for their evening activities, writing down what they did from 5 PM to 9 PM and the elapsed time for each activity.
Standards Aligned
Total Time: 2 minutes
This lesson aligns with Georgia Standards of Excellence for Mathematics, specifically focusing on measuring and estimating time intervals in daily activities.