👩‍🏫 Teacher’s Guide

Objective
Convert clock times using explicitly stated time-zone differences.

Vocabulary
time zone, local time, time difference

Suggested time
30-40 minutes, with optional practice across the week.

Teaching Notes

• Model one question by naming the relevant row, label, or statement. Have students explain the evidence for a second answer before working independently.
• Introduce the study resource before assigning questions. Students can answer using this lesson without opening the source book.
• Use questions 1-4 for guided practice and the remaining questions for independent practice or discussion. Open responses may use different wording if the evidence supports them.
• Check the activity against its stated constraints and the answer bank. Revisit a missed concept before adding a new one.

🧒 Student Worksheet

Concept and Helping Material

Earth rotates, so places at different longitudes face the Sun at different times. Time zones help coordinate clock time. This simplified exercise assumes the four listed zones differ by one hour each and follow matching seasonal clock changes. It does not model local exceptions or every US time zone.

Study Resource: One Moment, Four Clocks

Simplified classroom model. All four rows represent the same moment.

Vocabulary and Definition

• - a region using an agreed standard clock time
• - the clock time used in a place
• - the difference between two local clock times

Words to Learn

, ,

Sentences to Fill In

1. The term for a region using an agreed standard clock time is .
2. The term for the clock time used in a place is .
3. The term for the difference between two local clock times is .

🧪 Think & Respond Q&A

1. When it is 3:00 pm Eastern in the exercise, what time is it Central?

2. What time is it Mountain?

3. What time is it Pacific?

4. How many hours behind Eastern is Pacific in this model?

5. If a lesson begins at 4:00 pm Eastern, what time is it Central?

6. If it is 10:00 am Pacific, what time is it Eastern in this model?

7. When moving east across these zones, do you add or subtract hours?

8. Why is a time-zone name needed for a call between distant places?

9. Does this exercise cover every United States time zone?

10. What should you check for an actual call on a specific date?

11. Which lesson word means "a region using an agreed standard clock time"?

12. Which lesson word means "the clock time used in a place"?

13. Which lesson word means "the difference between two local clock times"?

Hands-On Experiment or Activities

What You Need: Four paper clocks.

What You Do:

1. Set the clocks to the listed times. Advance all four by two hours. Then ask a partner to convert a new time from one zone to another.
2. Check that the time differences remain constant in this exercise.
3. Revise one part of your work after checking it against the lesson evidence.

Think and Talk: What evidence supports one choice in your work?

Reflection

• Which idea can you explain now?
• What would you still need to learn about a real place?

Teacher Check

Check accurate use of the study resource, correct vocabulary or units, and a reason supported by evidence. For open activities, accept more than one result when it follows the instructions. The companion CSV contains the same numbered Q&A bank shown above.

Curriculum Reference

Scope alignment: Evan-Moor, Daily Geography Practice, Grade 4, Week 31. Student questions begin on printed page 61 (PDF page 63); corresponding map is on printed page 103 (PDF page 105). The explanations, practice data, diagrams, activities, and questions in this lesson are original. Fictional datasets are labeled in their study resources.