On Thanksgiving Thursday, Carissa ate some cranberries. The next day she couldn’t stop thinking about how good the cranberries were and ate seven more cranberries than she had eaten on Thursday.

Each day after that she ate seven more cranberries than the day before. By the following Wednesday night she had eaten a total of 161 cranberries for the whole week.

]]>**What do you notice in the video below? What are you wondering about? Leave a comment to tell us your thoughts!**

What do you notice in the story below? What are you wondering about? Leave a comment to tell us your thoughts!

A square is drawn on a coordinate plane. The square is in the first quadrant and the sides of the square are parallel to the axes.

]]>A line is drawn from the origin that cuts the square into two sections whose areas are in a ratio of 2:1.

What do you notice in the story below? What are you wondering about? Leave a comment to tell us your thoughts!

]]>If there is something I told you I’d include here that I forgot to add, let me know.

**Practicing Ambitious Teaching… At a Banquet for Bears**

- The Slides [PDF]
- The Student Work [PDF]
- The Problem [PDF]

**Using Students’ Creative Problem Solving to Build Algebraic Fluency from Conceptual Understanding**

- The Slides [PDF]
- Card Sort [PDF] Note: The last page has six of the same thing – so print 6, 12, 18, or 24 copies of the first two pages, and then 1, 2, 3 or 4 copies of the third page
- Card Sort in Desmos

What do you notice in the story below? What are you wondering about? Leave a comment to tell us your thoughts!

A circus clown has 16 balloons. One half of the balloons are red. Half of the remaining balloons are blue. The rest are yellow.

If there is something I told you I’d include here that I forgot to add, let me know.

Using Technology to Support Conceptual Understanding in Algebra and Geometry: Fetter NWMC2017 Technology Slides [PDF]

Note that the first two explorations will work on anything, but the others are java, so may or may not work on your devices (it depends how java is configured).

- Types of Triangles [web version we used]
- Types of Triangles [Desmos activity]
- Two Runners [web version we used]
- Two Runners [Java version]
- Galactic Exchange (Vending Machine)
- Virtual Algebra Tiles

Every Friday night, Drew’s family makes pizza for dinner. This week, Drew wants pepperoni and his sister wants extra cheese. His parents both want mushrooms as a topping.

Since they couldn’t agree, they decided to divide the pizza into four equal parts so everyone could have the topping of their choice.

I managed to write one webpage by the end of that week but that was just the beginning. My participation in the summer institute provided me with ftp access to the Math Forum server which in 1995 was amazing. I wrote **more and more webpages** which I connected together and named:

Sarah viewed each new page that I drafted, providing me with feedback. Remember how I described my lack of confidence at the summer institute? I had a similar feeling with each page that I was about to reveal to the “world” on the WWW. I was terrified. Sarah gave me the confidence to put my work out there. She valued what I was doing and I trusted her.

When I met Sarah in 1995 I quickly learned that we shared a love of the color **purple**. We developed a “code” that when I wasn’t quite brave enough to do something that I should just “put on my purple cloak” and do it! It was our way of giving me the power and the strength to have confidence in myself.

I don’t remember exactly what year it was when the Math Forum first ordered pens to give out at workshops and conferences but it was probably 2001 or 2002. Our pens were yellow/navy blue because those were Drexel University colors but the ink was purple! Tracey (Perzan) knew that would make me happy but what she probably didn’t know is that purple brings me strength. Purple reminds me of Sarah and how she believed in me.

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