After several separate lessons on lines and angles, we used discovery-learning to find the 7 Triangles of Reality. The kids used the Geometric Stick Box to see if they could create our grid of angles and lines. Is a right, scalene triangle possible? Yes! How about an obtuse equilateral? No! Our "Presentation of the Stars" helped provide the cultural context of angle measurement as a degree = a day on the path of a star...
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