Tag Archives: geometry

122 – constructing tangents

My geometry kids did two constructions today: Given a point, construct the tangent to the circle at the given point. Given a point outside a circle, construct a tangent to the circle from the given point.

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115 – chord designs

We’re just starting circles in geometry, so I had the kids do these chord designs. We divided the circle into 24 equal arcs. I had them connect points 1 to 8, 2 to 9, 3 to 10, etc. Then they needed to create another set using something other than n and n+7. I wanted them […]

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94 – GSP

I’m always thankful that our junior high students have 2 periods of math. And I think most of them do too. (Last year our Superintendent did a survey asking the kids about this change, and the majority of them said it was a positive thing to receive an additional period of math.) The extra period […]

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92 – ASN in geo and baker’s choice in alg

I typed up these 16 statements from the geometry textbook for kids to work in groups and determine if each statement is Always, Sometimes, or Never True. It’s so lovely to hear the discussions among kids with these ASN activities. My algebra students are just starting the “Baker’s Choice” Linear-Programming activity. I asked them to write down all the information they would […]

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39 – congruent halves

My geometry kids worked on Congruent Halves today.

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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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26 – taco cart

In geometry we worked on Dan’s 3-Act Taco Cart — great activity!

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20 – estimations, Ricky the sheep, missing area

My 6th graders had our first day with Estimation180.com. I’m waiting for the algebra kids to get tired of the Block Game, but still no such thing! They’re only getting better at the game — they’re blocking each other and showing work for each problem. In the second hour of algebra, we worked on a group […]

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19 – fractals

We made these in geometry. Kristen Fouss has really pretty ones.

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12 – inspired by Kate’s post

So, yeah, Kate’s post today inspired this extension of an otherwise not-so-hot construction of segment bisectors. #nguyening  

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