Answer to Question #342147 in Geometry for licks

Question

Describe van Hiele Level 1 (analysis), Level 2 (informal deduction) and Level 3 (deduction). Demonstrate the difference by using a scalene, isosceles and equilateral triangle as an example to explain learner thinking at the three different levels.

Level 1: Analysis (1)

How learner thinks about the triangles at Level 1: (3)

Level 2: Informal deduction (1)

How learner thinks about the triangles at Level 2: (3)

Level 3: Deduction (1)

How learner thinks about the triangles at Level 3: (3)

Sketch of scalene, isosceles and equilateral triangles (3)

Answer 1

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