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TIME TRAVEL
Topic: TIMEKEEPING
Grades: 3-5
Students measure time between events to help Digit find Inez - in the nick of time!
Learning Objective:
Students practice measuring elapsed time.
NCTM Standard: Measurement
Understand the need for measuring with standard units.
DIRECTIONS:
Materials Needed:
- Copy of "Time Travel"
activity (click here for printable PDF version) for each
student.
- Homemade clock face using a paper plate,
long and short paper arrows,
and a paper fastener
Class Periods: 1-2
1. Distribute the activity "Time Travel." Have
students work on the activity in groups and keep
a record of their work. To track Inez, students can
make one clock per group using the materials
listed above, or create a time line to track Inez's
progress.
2. Once students have solved the puzzle, discuss
with them how they tracked Inez. Ask them
other questions based on Inez's note. For example,
what time was Inez supposed to meet Jackie at the
pizzeria? (11:30.) Where was Inez at 10:05? (Surfing
the Internet at the library.)
Answer: At 11:15, Inez is roller blading in the park.
Cyberchase Episode: Clock Like An Egyptian
Dr. Marbles finds the encryptor chip, which he needs to delete Motherboard's virus, in an ancient pyramid. But the Mummy who guards the pyramid finds Marbles. The kids and Digit must work their way through the chambers of the pyramid, find Dr. Marbles, and escape before a trap set by the Mummy seals them inside forever. How much time do they have? Unfortunately, they have no clock or watch to tell them. Is their mission impossible? Not for our kids!
The Big Idea:
To measure the passage of time, choose a starting point and count up the beats of something that repeats at steady, regular intervals.
Cyberchase FOR REAL (Epilogue)
Harry loves clocks! In the live-action segment of "Clock Like an Egyptian," he checks out big clocks and small clocks and discovers different ways they tick and tock in a regular beat. Then he asks: What would happen if there were no clocks? No one could say, "Time for dinner!" or "Time for bed!"
Math Message: To measure time, you need a timepiece that counts and keeps track of regular beats.
More Math Fun:
Have students keep a time journal for one day after school. They should write down the times they start and stop after each activity, such as homework, soccer practice, dinner, watching TV, and sleep. Have them look at their journals and find which activity they spent the most time on.
Online games featuring similar math themes:
- Maze & Marbles (Keep time ticking)
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