In this session, you will use mathematical communication and geometric thinking to solve problems. You will use paper folding as a construction tool because of its visual and kinesthetic properties. (Paper folding is more intuitive and taps into geometric reasoning more easily than traditional straightedge and compass constructions.) The session ends with some reflection on the basic objects of geometry and the difference between an ideal mathematical object and its representation.

Part A:	Quick Images
Part B:	Building from Directions
Part C:	Folding Paper
Part D:	Basic Objects
Homework

In this session, you will learn to do the following:

Use geometric thinking to solve visualization problems

Use mathematical language to express your ideas and to understand the ideas of others

Construct the basic objects of geometry

Throughout the session you will be prompted to view short video segments. In addition to these excerpts, you may choose to watch the full-length video of this session.

New in This Session:

altitude
angle bisector
concurrent
line
line segment
median
midline
perpendicular bisector
plane
point
ray

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