The Earth and Its Features · SHS1 Geography

Lesson notes

Learning Objectives

Indicator: 1.1.1.LI.2 - Calculate distances using latitudes and time using longitudes

By the end of the lesson, learners can:

Calculate the distance between two places on the same meridian (longitude) using the difference in their latitudes and the value of 1 degree of latitude (approximately 111 km).
Explain the relationship between longitude and time, including the fact that the Earth rotates 15 degrees of longitude per hour.
Calculate the local time at a given place when the time at another place of known longitude is provided.
Apply the concepts of latitude-based distance and longitude-based time calculations to solve real-world problems involving places in Ghana and across the world.
Work cooperatively in mixed-ability groups to solve distance and time problems using maps or atlases, respecting diverse viewpoints and contributions from all members.

Refer back to this indicator throughout the lesson to keep the focus on calculation skills.

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Curriculum details

Strand: The Earth and Its Neighbourhoods (Strand 1)
Sub-strand: The Earth and Its Features (1.1)
Content standard: 1.1.1.CS.4 - 1.1.1.CS.4 Demonstrate skills in locating places using longitudes and latitudes 1.1.1.LO.4 Explain latitudes and longitudes and outline their significance to our everyday life
Indicator: 1.1.1.LI.2 - Calculate distances using latitudes and time using longitudes
Suggested placement: Semester 1, Week 10 (Week 10 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. 32

Exemplars (from the NaCCA curriculum)

Project-based learning: Using maps or other resources, and in manageable mixed ability groups, calculate distances using latitudes and time using longitudes. Learners should be firm and fair to resist inappropriate views that might override group's interest.

Assessment (1.1.1.AS.2). The document marks these depth-of-knowledge levels for this indicator: Level 2 Skills of conceptual understanding.

Teaching and Learning Resources:
- Globe
- Atlas
- Maps
- Google Earth
- Bing or other free 3D-capable satellite images to facilitate your discussions on the definition and characteristics of latitudes and longitudes