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Math at Casa
Asking math questions while waiting for lunch...
Matt Felton-Koestler with Courtney Koestler
Jan 20, 20201 min read
120 views
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Decimal Notation versus Meaning
I observed a lesson in a classroom today and while observing I began to wonder what Parker would do with the problem with a little...
Matt Felton-Koestler
Dec 8, 20175 min read
113 views
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Half of a Half of a ...
M: What'd you do in math today? P: Doubles and halves. M: Really, what numbers did you do half of? P: 1, 2, 3, 4, 5, 6, 7, 8, 9 ,10 M:...
Matt Felton-Koestler
Nov 10, 20172 min read
69 views
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Fractions with a Side of Pie
Parker wanted pumpkin pie with dinner tonight. After his first slice he asked for more. So I said his payment was to answer: "what...
Matt Felton-Koestler
Nov 9, 20171 min read
68 views
1 comment

Halves and Hundreds
I'm reading The Poisonwood Bible for my book club and I just realized we meet this Sunday, not next Sunday, so I'm freaking out about how...
Matt Felton-Koestler
Sep 25, 20172 min read
48 views
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Ours is not to reason why…
…just invert and multiply! This post is a bit longer and a bit more didactic than many of my others, but I think it's interesting all the...
Matt Felton-Koestler
Sep 20, 20175 min read
247 views
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Watching Middle School Number Talks
This post brings together number talks, doing fractions, and ways to work on math with your child without doing drills. Recently,...
Matt Felton-Koestler
Sep 15, 20175 min read
162 views
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More Water Jug Fractions
After solving the previous problem, I told Parker I was going to give him something more challenging (take a minute and try to solve it...
Matt Felton-Koestler
Aug 24, 20174 min read
245 views
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Early Fractions
A few weeks ago I wrote the following on Facebook: Last night Parker figured out 3 ÷ 3/4 (in a story problem). This morning Parker said...
Matt Felton-Koestler
Aug 24, 20174 min read
91 views
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