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 Skip counting or word skipping? June 25, 2017
 Numicon – combining geometry and arithmetic June 22, 2017
 Discussing the meaning of “almost” with an 8 year old June 2, 2017
 From mathhater to mathematician and computer scientist: The story of Allison Bishop June 1, 2017
 A number talk that turned into an investigation May 26, 2017
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Tag Archives: place value
3digit numbers are tricky! Part II
This is a followup post to this one, about introducing 3digit numbers to kindergartners. I start this lesson by asking the students to come up to the board one by one and write down consecutive numbers starting with 100. There … Continue reading
Posted in Uncategorized
Tagged 3digit numbers, counting, Kindergarten, Main Line Classical Academy, place value
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Drawing stars and triangles
Last week we did several really fun activities from the book A Collection of Math Lessons, A: Grades 13 by Marilyn Burns and Bonnie Tank. Here is an account of one of them. The activity was “How many stars can … Continue reading
Posted in Uncategorized
Tagged 6 years old, 7 years old, drawing, fun math, Main Line Classical Academy, place value, second grade
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Sixtyeleven
You probably knew that sixtyseven plus four equals sixtyeleven, but for Katie and Varya this was a source of great surprise and amusement during today’s lesson. We were continuing with adding twodigit numbers, but this time I decided to make … Continue reading
The Value of Place Value
Katie has been able to count until 100 for a while and now may even be able to get up to 1000. However, I realized that she doesn’t actually understand the decimal system and place value (i.e. why are two, … Continue reading