Lines, Line Segments, Rays, and Infinity!

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Summary

A lesson about lines, line segments, and rays that avoids dull memorization. Instead, we ponder this delightful question: Which is longer, a ray or a line? Then, kids consider what these different geometric concepts would think about each other.

  1. I introduce students to lines, line segments, and rays. Finally, I pose the delicious question: "Which is the longest?"
  2. Now we ponder: "Which has more points on it?"
  3. Finally, students explore an idea such as: "What would a ray think about a line?" or "If a line wrote a poem to a line segment, what would it be like?" They can then create a mini-story, a comic, a play, or whatever you see fit!