# Monthly Archives: October 2012

## 39 – congruent halves

My geometry kids worked on Congruent Halves today.

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## 38 – SSS, SAS, ASA

I’m really proud of how the kids found these three triangle congruence postulates.

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## 37 – racetrack

It’s another early dismissal for kids today because we have our annual Carnival from 3:30 to 8:00. Normally my homeroom gets the Dunk Tank booth, but due to liability issues, we no longer have it. I think we have the dessert table now. Not quite the same. My 6th graders have already played Battleship with their other math […]

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## 36 – difference engine

I wrote a little bit about Difference Engine… and Wolves and Sheep here.

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## 35 – distance problems

In our Glencoe algebra textbook, D=rt problems are lumped in the same section as Mixture problems. I get it. And I don’t. Maybe I’m kidding myself or in denial, but this year I’ve been saying this phrase a lot in class: Do what makes sense. I’m tired of using tricks, mnemonics, pre-made grids to help kids learn. Like […]

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## 34 – block game and something else happened

My 6th graders played Block Game for multiplying and dividing integers. After school yesterday I was going through my iPhone and made a face when I saw this picture. Two students saw my reaction to the picture, one asked, “What’s so funny? What’s wrong?” I didn’t want to lie, so I showed them the pic and pretty […]

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## 33 – basketball travel and mixture problems

Busy Monday! I’m using Andrew Stadel’s Basketball Travel for this week’s Geometry PS. I think it’s a good follow-up to Taco Cart. I think my algebra kids are getting a hang of mixture problems!!! Finishing up Stealing Bases from Friday. Lots of discussion and calculations!

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## 32 – stealing second

Stealing Second was a hit with my geometry kids! We’re not done yet, but we had a great discussion on the mechanics and mathematics of stealing a base. Students also argued whether to steal when the pitcher is left or right-handed. These crazy kids wanted to “act it out.”

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## 31 – emperor’s banquet

I like this classic problem a lot. My algebra kids were white-boarding this PS; a few groups found certain limited patterns within it, but they’ll need to track their work more systematically to see the full pattern. Emperor’s Banquet You have been invited to the emperor’s banquet.  The emperor is a rather strange host.  Instead of sitting […]

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## 30 – Salute! game

I was not happy this morning to see my sub’s notes about how poorly behaved my algebra kids were yesterday. There isn’t a fiber in me that will tolerate disrespect, so they got an earful from me. My sub is a math major, finishing up her teaching credential. She’s been my main sub for the […]

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