Unit 4, Day 13

Agenda

1. Number talk: Which One Doesn’t Belong — $x+y=1$, $z=5$, $y=x$, $x+y+z=1$: in three-space, which is the odd one out?
2. Random groups — Where Planes Meet: three sheets of cardboard, and every configuration you can force them into
3. Consolidate: Equations of Planes, then Intersections of Lines and Planes — the algebra behind each arrangement on your desks
4. Practise: Lines and Planes Practice — the rest
5. Symposium stations assigned: The Math Symposium is one class away — plan what your station will show

Things to do before our next class

• Read the prompt in Final Reflection tonight — symposium day moves fast, and you will want it already turning over.
• Rehearse your five-minute tour once, out loud.