SHS2 Geography · Semester 1 Week 17: Maps: Their Elements and Analyses

Lesson notes

Learning Objectives

Indicator: 2.2.1.LI.2 - Measure distances and areas on maps

By the end of the lesson, learners can:

Use a string, ruler, and the linear scale on a topographical map to measure straight-line and curved distances accurately, converting map distances to ground distances in kilometres or metres.
Apply the formula for area calculation (length × breadth) to determine the area of rectangular and square features on a topographical map, converting results to ground area in square kilometres.
Use the grid-square method to estimate the area of irregular features such as forests, lakes, or built-up areas on a topographical map.
Measure actual distances and areas on the school compound using a measuring tape and compare these ground measurements with map measurements to verify accuracy.
Work collaboratively in mixed-ability groups, demonstrating patience, accuracy, and respect for diverse ideas during map measurement tasks.

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Curriculum details

Strand: Navigating Our Environment (Strand 2)
Sub-strand: Maps: Their Elements and Analyses (2.1)
Content standard: 2.2.1.CS.1 - 2.2.1.CS.1 Demonstrate skill in map analysis 2.2.1.LO.1 Using the knowledge from maps and scales, reproduce maps, measure distances and areas, determine direction and bearings, and draw cross-sectional profiles between places
Indicator: 2.2.1.LI.2 - Measure distances and areas on maps
Suggested placement: Semester 1, Week 17 (Week 17 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: NaCCA curriculum document, p. 75

Exemplars (from the NaCCA curriculum)

Talk for learning: Using video, maps and other relevant materials in all-inclusive groups of people from different geographical areas, do a whole class discussion on the techniques, and steps to measure distances and areas on a topographical map after watching a video on distance measurement on maps. Learners during discussions should provide opportunities for others to practice identifying potential situations or experiences that lead to feeling overwhelmed and struggling to manage emotions.
Activity-based Learning:
- Undertake the measurement of distances on a given map and areas of maps individually.
- In pairs carry out actual ground distance and area measurements on the school compound using a measuring tape.

Assessment (2.2.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 3 Strategic reasoning.

Teaching and Learning Resources:
- Watch videos on map reduction and enlargement on mobile phones, computers/laptops.
- Printed topographical maps
- Topographical maps
- Calculator, thread, paper, measuring tape, etc.