Tag Archives: number talk

In my district, there are several 6th grade teams at three separate elementary schools. They are an anomaly in that they are invited to secondary professional developments & textbook trainings with other middle school teachers, but yet they are their own special group.  It’s not easy to have secondary expectations, all the while being at a site with kindergarteners passing by your window.  With all these new expectations, new standards, and a new curriculum guide, I saw the need for help.  Me –being a middle school teacher turned math coach–jumped right in.

Our latest venture at one site has been to start math talks.  I introduced them to Which One Doesn’t Belong, Estimation 180 and Would You Rather. They were excited by these routines because they are engaging for the students.  It’s not their usual math.  It’s different.  The teachers are now sparking conversations with the pictures and questions.  It’s been incredible for them.  I recently took their principal on a math walk into the three 6th grade classrooms so she could observe their new routines.  The principal was supremely happy.

One popular thought that came up during our work last year and this year was a simple question….how do you review previous units?  How do we keep information that we did at the beginning of the year fresh?  For instance, 6th grade began the year introducing rates and ratios.  Part of their “Would you rather” routine reviews rates.  For instance…would you rather buy a Starbucks Venti for \$3.59 or a Starbucks Grande for \$2.99.  Essentially we are asking which is a better buy. We are starting a math argument.

So how do you bring fractions, decimals, percents, and ratios to life?  How do you make that lively and different from what they see in their textbooks?   Well…let’s first look at this pic….

What do you see? What do you notice?  What math questions could we ask?

What fraction of the donuts have green icing?  What’s the ratio between sprinkled donuts to stripped donuts?  What percentage of donuts have chocolate icing? What fraction of the donuts have purple icing?  Can you turn that into a decimal?

A simple routine comprised of many pictures of donuts, cupcakes, legos, or any variety of objects.  I’ve seen many math educators use pictures like this to start a visual routine/number talk.  Pictures are an amazing way to wake the students up and look at things differently.  I might bring this routine to my kindergarten teachers as a sorting activity.

So many donuts…..so many possibilities.

Until next time,

Kristen

Clothesline Fractions

Fractions is one of the “F” words in math.  (The other is functions, but I’m not working with that grade level).   Whenever these two words are said, teachers usually groan with frustration (that other F word). Understood because both can be hard to understand for students.  Part of my job is to turn that frustration into FUN!

Third grade has been working on their fractions for the past 4 weeks. This week I went in to work with them.

First I started off my visit with a number talk using a picture that has been floating around Facebook.  This picture had the potential to initiate lots of discussion and it surely didn’t disappoint.

I let the students just stare at it awhile. Rather than taking observations and questions right away, I like my students to just have quiet time to internalize what they’re seeing. Next, they shared with their elbow partners their thoughts and questions. Then, I let them share their thoughts with me.  Watermelons provoke lots of discussion (who knew?).  Lastly, I asked them what possible question I could ask of them.  One of the teachers rose her hand and said, “how many watermelons are there?”  Being picky about words and vocabulary, I politely added to her question.  I asked the students “how many WHOLE watermelons are there?”

Here are some of the highlights of the three classes’ discussions….

• I see eight pieces of watermelon.
• They are in a square.
• It looks like an optical illusion. It’s kind of like the 4 outside melons are the frame and the half melons are the picture.
• Some of them look like Pac-Man
• How are they standing up like that?
• Finally, the quietest girl explained how she saw 5 watermelons.

Onto the class activity.  The third grade knows I come with something different, innovative, and unique.  I like to surprise them.  I didn’t invent this idea.  As a matter of fact, my inspiration was from a workshop I had attended given by Andrew Stadel.  He introduced me to Clothesline Math.   I wanted to use this idea of an interactive number line with fractions.   I envisioned a single clothesline with students approximating where to place certain fractions between 0 and 1.  However, one question lingered.  How can I maximize the engagement with the whole class in this activity?  Print out 30 fraction cards?  With my active imagination, I saw kids running for the number line, tripping over each other, and ending up in one gigantic entangled web of limbs, fraction cards, and rope.  Yeah…that wasn’t happening.

After a trial run in my office, one of my colleagues suggested that I put up two clothes lines.   LIGHT BULB!!!  That was it!  Split the class up.  13-15 kids working on a number line was a much better option than 30 kids per one number line.

So happily, I strung up two number lines in the classrooms (one in the front and one in the back).  I printed out about 20 fraction cards on colored cardstock.  I not only used unit fractions, but also chose equivalent fractions, and pictorial fractions.

The students were stoked and excited.  I promised them that they weren’t being timed (don’t like to pressure students with that element) but emphasized that they needed to work as a team.  Off they went.

One of the teams decided to analyze and read all the cards first.  Good strategy.  Other teams just started grabbing cards and ran for the line.  One of the teachers approached me and asked if the kids could use their fraction bars.  My compromise was to let them work for 10-15 minutes first before using their fractions bars.  They ended up only using their fraction bars to check their work after their number lines were completed.  Very resourceful.

Here’s something I found intriguing.  One of the kids clipped together these two cards as equivalent fractions (see below).  He saw the picture as 1/5.  I intended for the answer to be 4/5, but could a student validate this as equivalent fractions?  I asked one team this question and none of the kids wanted to take ownership of it.  I think they were embarrassed to admit to it in fear that they would be wrong.

As a closing activity, we did a “would you rather” question.  Would they rather eat 2/3 box of cookies or 4/5 box of cookies?  They could write out their reasoning on the paper.  They were allowed to use whatever strategy they could to validate their reasoning.   I didn’t get to see how these turned out as my time ran out with each class, but my hope is that it was worthwhile.

After the excitement of the day, my mind is reeling with other concepts that could be used on the number line.  The third grade teachers also want to use the clothesline concept for other topics.  This especially excited me because it means I’m empowering my teachers to try new things in their classroom.

Kristen

Number Talk Images

Can I just say that I can’t get enough of visual math routines?  Or do you call it a number talk image?

Some call it a visual number talk.   It’s a picture that’s shown with a known quantity.  Students may start by making observations and ask questions that are lingering in their heads (AKA Notice/Wonder–thanks Annie Fetter!)  Once their questions are answered, they may try guessing a number that’s too low.  Next they’ll try to guess a number that’s too high.  The last number they’ll write down is an actual estimation.

Why should we do this?

• Develops students’ understanding of quantity
• Give numbers meaning
• Help students see the relationships of numbers to one another
• Support an understanding of how numbers operate

The conceptualization of quantity is foundational to number sense. As students’ abilities to visualize amounts improve, their number sense improves. Their strategies and mental math become efficient and quick.

Once I was introduced to this routine, I was ADDICTED!  It became a mission of mine to find my own pictures.  My goal was to develop a collection of everyday items (thanks Target!) that any other ordinary human would pass up.  Well, this April Fool has you covered.  Every now and then, I stumble across something and take pics like a crazy person.  And yes, I will sit there and count.

So here is something I came across during the after-Christmas sales. How many storage boxes are there?

Just in time for Valentine’s.  How many hearts are on the front side of this bag?

If you are interested in more of these, I suggestion Andrew Stadel’s Estimation 180.  And if you are interested in more images ,Pierre Tranche’s Number Talk Images is really cool.

Oh…and not to leave you hanging.  There are 60 storage boxes and 388 hearts.

Kristen