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Category: Number and Operations

The Estimation Jar – Number Sense in Action

The Estimation Jar – Number Sense in Action

I was cleaning up the Estimation Table at my last Family Math Night event when I noticed a slip of paper next to the Hershey’s jar.  Taking a closer look at it, I realized I was looking at the thinking behind someone’s guess as to the number of Hersheys in the jar. This piece of paper is priceless to me as an educator.  It allows me to clearly understand the steps this child took to arrive at his/her answer – an answer…

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Counting Money at Family Math Night

Counting Money at Family Math Night

Back in the early 2000s, my husband and I joined forces, he as a software engineer and me as a teacher, to design a kids savings and money management software program.  We called it KidsSave.  In that program we included a fun way to teach kids basic money skills.  It was such a powerful tool that we decided to include it for free on our kids and money website. One of my favorite features of the KidsSave Money Counter is…

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Family Math Night What Do You Notice? Poster

Family Math Night What Do You Notice? Poster

The Common Core State Standards in Mathematics is really emphasizing number lines in student work with numbers.  So I thought I’d include one on a What Do You Notice? Poster at last night’s Family Math Night event.  But in order to reflect both the primary and intermediate grades, not only did I include the counting numbers, but I marked the fourths, as well. Some students noticed the color pattern I used – even numbers are blue and odd are red….

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Family Math Night What Do You Notice? Poster

Family Math Night What Do You Notice? Poster

So for this What Do You Notice? poster, I decided to tie in rectangular arrays with prime and composite numbers.  That said, whatever math-y thing students notice is totally acceptable.  For example, one student noticed that the “buildings” had square windows.  Great.  That’s a little bit of geometry.  Another student noticed that each set of colored rectangles included the same number of squares.  Again, great, as that required some counting and comparison.  Just like the student who noticed that there are…

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Family Math Night What Do You Notice? Poster

Family Math Night What Do You Notice? Poster

Here’s my latest What Do You Notice? poster from a recent Family Math Night event.  The nice thing about these posters is that they’re open-ended which allows for anyone to respond.  For this one, I decided to make a venn diagram.  But I didn’t draw the usual circles.  Instead I drew two hexagons.  This created the rhombus (parallelogram) in the center. The categories I used for the numbers were even numbers and multiples of 5.  That said, anything appropriate would have…

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