Archive for December, 2009

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Geometry Bisectors, Medians, and Altitudes

December 10, 2009

Notes: Foldable booklet with patty paper

I am probably too proud of this foldable. I made up an 8-page booklet with the following pages:

  1. Perpendicular Bisector Theorem
  2. Angle Bisector Theorem
  3. Median
  4. Altitude
  5. Circumcenter (Perp. Bisectors)
  6. Incenter (Angle Bisectors)
  7. Centroid (Medians)
  8. Each page has the title along the top and a brief description (with holes) along the bottom. In between, students paste patty paper examples of each. It’s so cute!!

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Ideas from Active Algebra

December 10, 2009

“Trashketball”
The presenter gave us this idea of actually encouraging kids to throw paper in class. In her version, students draw a number from 1 to 7 — that is the number of tosses the student makes into a trash can. For each toss, the student (and the class) calculates the fraction of tosses that the student has made (ex. \frac{1}{1}, \frac{1}{2}, \frac{2}{3}).

The variation S and I thought of was to group students at each table for a kind of “semi-final” competition. They could roll a die to determine how many tosses they get. The winner of each table then advances to the “final” with the big trash can.

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Algebra Inequalities With Variables on Both Sides

December 3, 2009

For this lesson, we did more of the practice as before, but we also added in some word problems.

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Geometry Chapter 7 Review

December 2, 2009

We did the review using a powerpoint and the clickers, and I think it worked out really well. It was more interesting than just a regular review, and they seemed more engaged. In addition, the clickers gave us some instant feedback.

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Algebra 3-4 Multi-Step Inequalities

December 1, 2009

Presentation: Spiral notes with glue-in prompts

We did a combination of having them write in their spirals for the basic two-(or more) step inequalities, and then we gave them little cutout word problems to paste into their spirals. We then went over what the key words were in each problem, how the solution to the problem would look in English, and then how to translate that into Algebra and solve.

I’m not sure I’d want to do this all the time, but I thought it made a nice change-up from either all handwritten notes or holey notes. Especially after going through the word problems, they seemed to have a better grasp of the important words and how they fit together. We’ll see.

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Someone Else Trying Tables

December 1, 2009

LeesePea is also trying tables of four:

When it came time to start on the homework, I instilled the “Ask 3 before me” rule: before they could ask me for help, they needed to ask the people at their table for clarification, and if the group couldn’t come to a consensus, then I could come in for assistance. And you know what? The kids who seemed a little iffy with things were able to get someone to explain it in a way that that helped them out, rather than have me come in and give it a shot.