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Exchanging Time
Lesson Objective
The students will be able to use the four operations to convert units of time, and measure the passage of time, using seconds,
minutes, hours, days, months, and years.
Background Information for Teacher
Student Prior Knowledge
Paper plate, 9-inch
Number stickers
Decorative paper
Brad folding clips
Sharp pencil
Hole paper punch
Prepare ahead of time: Time conversion chart for the student, gather supplies as needed for clock making, adapt clock
making as necessary.
Step-by-Step Guided Lesson
Step 1: Start Video
(Tips: Interact with the video by pausing, to ask questions or discuss information viewed with student.)
Step 2: Teach Lesson
Display actual time measurement tools (clocks, calendars, stopwatch, etc.) or the images of the same. Ask the student why each
measurement tool is used. What is it used for? (Measuring days, hours, minutes, seconds – races, meetings, for cooking, etc.)
Allow for responses and discussion. Tell the student they will need to learn the units of time, and how to measure time.
Give the student a chart showing the different units of time and conversions. (60 sec. = 1 min, 60 min = 1 hour, etc.)
Distribute clocks with movable hands or have the student build their own paper plate clock. (These can be made easily using
cardboard or paper plates: Instructions on how to make paper clocks).
Review each unit of time with the student: seconds, minutes, hours, days (optional: months/years, decades, centuries)
Using the clocks, show the student the passage of time in minutes and hours. Give the student examples of the passage of time:
How many minutes/hours have passed between 10:00 and 10:50, 12:45 to 1:55, etc.? How many minutes’ old are they?
Use as many examples as necessary based on students’ needs.Tell the student they will now create ten problems, which will be
solved by another student or teacher. Tell the student to mix up the questions and to use real life events. (For example, how much
time passes during the school day from 8:30 AM to 3:15 PM, days in a school year, etc. How many seconds long is breakfast?)
Give the student time to complete their problems. Tell them to create an Answer Key. Once finished, distribute the problems to
another student or teacher.
Once completed, the problems to be checked by the original writer.
Earn FunBucks!
Submit your 10 problems so other students can solve them and earn $7 FunBucks!

Step 3: Complete the worksheet attached below.
Worksheets for extra practice with answer key
Step 4: Review. Start the next lesson with the game or activity attached below for review so the student can demonstrate
understanding of this lesson before moving forward.
Fight Schedule (offline) worksheet