![]() Connect the ends, measuring to ensure the third side is the same length as the first two.Measure an angle of 60 degrees from one end of the first side.ĭraw a second side to the same length as the first, again using a ruler.Draw one side to the required length, using a ruler.There are three relatively easy methods, give students the opportunity to try each (or demonstrate each to the class on the board). Discuss their ideas – their advantages and disadvantages. Ask students how they could construct an equilateral triangle.This is not a property of triangles, but a property of regular polygons (including equilateral triangles). Beware of students saying that triangles have all sides the same length or all angles the same.Brainstorm with the class ”The properties of triangles”.ĭifferent types (scalene/isosceles/equilateral/right-angled). ![]() Investigate the use of triangles in construction of culturally significant buildings like wharenui, Egyptian pyramids, the Louvre in Paris, and the biosphere environmental museum in Montreal.Ī review of knowledge about properties of triangles, followed by a discussion of ways to construct triangles with specified dimensions. Look for triangles in the dome structures used for climbing frames. Triangles are often used to form pieces of children’s playground equipment. Bracing of frames in building creates triangles that keep the structure fixed. Students will be motivated by seeing the use of triangles in construction. It is about triangles and their use in construction of 3 dimensional solids. The context for this unit is mathematical. ![]() Asking students to work in small, collaborative groups.Building simple polyhedral first before proceeding to more complex models.Directly instruct students on use of tools, especially protractors and rulers.Allowing students to experiment with constructions in a digital platform.Deliberately scaffolding the steps in constructions of triangles.Let us start learning about the equilateral triangle formula. It appears in a variety of contexts, in both basic geometries as well as in many advanced topics. Only equilateral triangles can be counted, while other triangles must be ignored. This is the only regular polygon with three sides. What is the most number of equilateral triangles you can form by drawing 13 points on a piece of paper Each triangle must have 3 equal sides and pass through 3 points. The learning opportunities in this unit can be differentiated by providing or removing support to students and by varying the task requirements. Ways to differentiate include: An equilateral triangle is a triangle whose all three sides are having the same length.
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