👩‍🏫 Teacher’s Guide

Objective
Calculate distances along a connected route using a stated scale.

Vocabulary
scale, junction, route

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

A road map of South Dakota can show towns, junctions, and roads. The route below is an invented exercise set in a rural setting; its junction names and distances are not real South Dakota road data. A road map shows how routes connect places. The shortest straight line is not always a usable road. A scale relates a map measurement to a real distance. Multiply the map length by the distance represented by one centimeter. Add the sections actually traveled.

Study Resource: Route Diagram

Invented practice route; not a real road or trail survey.

West Junction -- 2 cm -- Farm Junction -- 3 cm -- River Junction -- 4 cm -- East Junction

Scale: 1 cm on this diagram represents 5 km on the ground. Use the written lengths, because screen and print sizes can change.

Vocabulary and Definition

• - a relationship between map distance and ground distance
• - a place where routes meet
• - a connected way between places

Words to Learn

, ,

Sentences to Fill In

1. The term for a relationship between map distance and ground distance is .
2. The term for a place where routes meet is .
3. The term for a connected way between places is .

🧪 Think & Respond Q&A

1. In this exercise, how many kilometers does 1 cm represent?

2. How long is the first section on the map?

3. What is the ground distance of the first section?

4. What is the ground distance of the middle section?

5. What is the ground distance of the last section?

6. What is the total distance from start to finish along the route?

7. Which section is the longest?

8. How much farther is the last section than the first?

9. If the last section closes, can this diagram prove that another route reaches the finish?

10. Why should you use the written centimeters rather than measuring a resized screen image?

11. Which lesson word means "a relationship between map distance and ground distance"?

12. Which lesson word means "a place where routes meet"?

13. Which lesson word means "a connected way between places"?

Hands-On Experiment or Activities

What You Need: Pencil and paper.

What You Do:

1. Draw a new three-section route. Give each section a length and keep the lesson scale. Compute each ground distance and the total.
2. Exchange routes and verify both the arithmetic and the units.
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 3, Week 12. Teacher lesson begins on printed page 50 (PDF page 52). The explanations, practice data, diagrams, activities, and questions in this lesson are original. Fictional datasets are labeled in their study resources.