I am trying something new for UNL Math Day contest prep this year. I have dubbed this week **"Geometry Week." **

**It's like Shark Week... only** **BETTER**.

I prepared a packet of every Geometry question that has appeared on the PROBE I since 1990. I am allowing the kids to work in whatever groups they want, whether it's individually, pairs, small groups, or large groups. Below is one of the first questions kids worked on today. A couple kids approached me during class to ask if they could make shadows on the Promethean board. Awesome. Here's the question:

1991 UNL Math Day Probe I Exam

First, the kids asked for a cube. They are using a wooden cube I keep in a plastic container of manipulatives in my desk drawer. Next, they asked for a flashlight. Add that to the list of random objects I need to have in my classroom. I apologized for not having one. Then, they asked if they could use the projector to try and make the different shadows on the Promethean board. Brilliant idea, kids. Do it.