Lesson:
Description 
Sketchpad v.3 
Sketchpad v.4 
Internet Tools 
CABRI Jr. 
Other 
1.1.1: Quilts 





1.1.4: Are you convinced? 





1.2.2: Transformations 





1.3.1: How can I classify this shape? 





1.3.2: 





1.3.3: 





2.1.1: 





2.1.2: Tiling Parallelograms 





2.1.4: Angles in a Triangle 





2.2.2: Area of Triangles 





2.3.2: Triangle Inequality 





2.3.3: The Pythagorean Theorem 





3.1.1: Pantograph 





3.1.2: Stretching/
Shrinking 





3.2.1: Similar Triangles 





3.2.4: Conditions for Triangle Similarity 





4.1.3: Slope Ratio 





4.2.2: Roll and Win 





5.3.4: SSA 





6.2.4: Monty Hall Problem 





6.2.5: Snowflake Activity 





7.1.3: What's the shortest distance? 





8.1.3: Exterior Angles of a Polygon 





9.1.1: 





9.2.1: 





11.1.1: Duals of Polyhedra 





11.2.2: Tangents & Arcs 





11.2.3: Secant/Tangent 





12.1.1: Parabola 





12.1.4: Conic 





12.1.5: Conic Equations 






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