28. August 2017

Task of the Week: Slope of the Roof

Today’s Task of the Week leads us to South Africa. Matthias Ludwig created three trails in Grahamstown as part of a teacher training course. You can learn more about the background here.

The task described is about determining a roof slope using a gradient triangle.


Task: Slope of the Roof (task number: 1697)

Calculate the slope of the roof. Give the result in percentage (%).


The task can be integrated in the topic of linear functions and their slope. The slope is determined by the quotient of vertical and horizontal length. For this purpose a suitable gradient triangle must be found. While the horizontal length can be determined by measuring, the height can be calculated using the number of stones. The task is therefore a successful combination of geometry and functions and can be used from class 8.

Date: 28. August 2017 | By: Simone Jablonski | Category:  | No Comments

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