Another lesson, another story: Counting outfits and classifying quadrilaterals
This Wednesday’s lesson was a bit chaotic and unfortunately I do not have any pictures from it. The girls were both hyper and cranky, and it was hard to keep their attention for more than five...
View ArticleRectangular Numbers?
A few days ago Katie and I played the following game: one of us would say a number and the other one would have to make a rectangle out of that many squares (actually we used the board and chips …...
View ArticleChips for All Seasons
Yesterday’s lesson with Katie and Varya consisted of exploring various ways of using colorful game chips for doing fun math. The first activity involved dividing the chips between the doll Nina and...
View ArticleFun With Multiplication?
For the past few weeks in class, we have been exploring multiplication. A few months ago, we had learned about and practiced skip counting, so this time around we started by discussing why this might...
View ArticleNapier’s Bones
Recently, my husband was reading on Wikipedia about John Napier. He became very intrigued with Napier’s bones, and decided to see whether we can acquire some. I was very excited by the prospect as I...
View ArticleExploring Rectangles
Friday is a special day in our math classes at the Main Line Classical Academy. We read and discuss mathematical stories and we do exploration projects. Here is the project that we did with the...
View ArticleDots in a Square from Math Without Words
Recently, my third grade class and I have fallen in love with Math Without Words by James Tanton. This is a delightful collection of math puzzles, ranging in difficulty from fairly easy to quite hard,...
View ArticleDouble perfect squares
We have recently done a unit on perfect squares in school. The following conversation with Katie (8yo) happened completely spontaneously on a peaceful, evening ride home. K: 10,000 is a double perfect...
View ArticleGames with the multiplication table
The following was translated from this post by Jane Kats. Translation and translator’s notes are by Yulia Shpilman. (Translator’s note: I taught a lesson inspired by this post to my math circle for...
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