# NCTM Comes to Music City

The National Council of Teachers of Mathematics held a regional conference in Nashville, TN last week. Since I live in Music City, this was too good an opportunity to pass up! I’ve attended several NCTM conferences, both national and regional, and this was by far the best and most technologically savvy one.

To begin, I installed the conference app on my phone, which made planning and organizing my experience a breeze. It synced the sessions I wanted to see with my calendar, so I received reminders and updates for each one. The app also promoted interaction among attendees through its Activity Feed. We could also keep up with what was happening via Twitter using the hashtag #NCTMregionals.

The first session I went to was “Hands On Trigonometry”, by Elizabeth Petty. She led us through a lesson on the unit using paper plates and twizzlers to demonstrate what a radian is. We then folded the paper plates in half to create an x-axis, then thirds to mark the 30 and 60-degree points on the circle. It was an excellent example of using a hands-on activity to reinforce a difficult math concept.

The next session, “Keeping It Real: Authentic Real-World Math Lessons”, was presented by Ginny Stuckey of Mathalicious. Their mission is to develop lessons that use real-world data and situations to spur critical thinking in students. The lesson Ms. Stuckey demonstrated involved how municipal fines can quickly become impossible to pay off for low-income offenders.

Next up was one of the best sessions of the conference, “Using Manipulatives and Investigations to Teach Geometry”, by Christine Mikles. Ms. Mikles uses the CPM Geometry text, which is full of hands-on activities. Here’s an example of using two mirrors and a protractor to learn about central angles in regular polygons:

The last session I attended on Thursday was “Slices of Calculus”, by Nina Otterson. As a veteran calculus teacher, I was very excited to learn a new way to teach how to calculate the volumes of solids of known cross-sections. Ms. Otterson’s approach makes a lot of sense: she has her students learn what ratio of a square’s area is an equilateral triangle, an isosceles right triangle, and a semicircle. Then, they find the volume of the solid using a square, which is easy, and apply the appropriate ratio. Her students build models of each type of solid. Here’s one I built using equilateral triangles whose base is a pair of intersecting parabolas:

Friday’s first session was “The Math Department I’ve Always Wanted: Twitter As My PLC”, by Michael Felton. It was an excellent presentation on how math teachers can use Twitter to ask questions of other teachers, get great ideas for lessons, and get feedback on their own lessons. Michael is part of the “Math Twitter Blogosphere” (#MTBoS on Twitter), where some of the most innovative teaching is being developed today. If a teacher needs some ideas on how to teach practically any math topic in a creative way, he or she can find it at MTBoS.

Next, I went to a session sponsored by CPM (College Prep Mathematics): “CCSS Math Practices? Trust CPM’s 25 Years of Writing Experience”. This company is a nonprofit textbook publisher run by math teachers. Their series of books stresses the importance of hands-on explorations to teach math concepts. I was very impressed with the passion and excitement of the teachers who use these books.

Finally, I went to another session by Michael Felton, “Desmos and Modeling”. I’ve used Desmos‘ online grapher for several years now (I even did a presentation on it at a TAIS conference last year). They have moved far beyond a simple function grapher, though. Their site now includes all kinds of activities that teachers can use in the classroom. The one Michael demonstrated involved matching transformed sinusoidal curves, and it was a lot of fun. Go to https://teacher.desmos.com/ to see all the fantastic lessons they offer. Teachers can also keep track of students’ progress as they work through the activity.

All in all, an excellent conference. It is fascinating to see how social media is transforming teaching, and how much teachers are trying to incorporate active learning into their lessons. I figure a conference is worthwhile if I can take home at least three good ideas/lessons/activities from it. After this one, I have more than dozen to try out with my students!

I’ve been using Twitter more and more the past few months, picking up great ideas from other teachers and bloggers. Now I’m considering applications of it with my students. It would make a nice back-channel communication method for students who would like to comment on something without resorting to email. By creating hashtags for my courses, we can all have running conversations on a variety of topics. To encourage that, I’ve embedded a Twitter feed into my courses’ Moodle pages:

Now they can see the tweets my “fractad” feed is getting, as well as send a quick tweet directly to me.

Here are the steps involved in making your very own Twitter feed you can embed in your Moodle, Haiku, or Blackboard page:

2. Choose “Settings”.

3. In the menu on the left, choose “Widgets”

4. Click the “Create New” button, and select the various settings for your widget.

5. Click the “Create Widget” button, and copy the html code that will appear. Use this code to embed the widget into your LMS page.

One thing that’s very cool – you can create a Twitter feed for any Twitter user. If your school has an account, you can embed that feed into your page. Or, you might want to embed the feed of a professional organization you follow (NCTM, in my case).

If you’re relatively new to Twitter, and you aren’t sure who or what to follow, here’s a list of people and organizations that I’ve found to be very useful:

Math & Science:

@lostinrecursion (Paul Salomon)                             @rmbyrne (Richard Byrne)

@MT_at_NCTM (NCTM Mathematics Teacher)       @Mathalicious

@fnoschese (Frank Noschese, science)                  @ddmeyer (Dan Meyer, math)

@desmos                                                                   @mrbarlow (science)

Education:

@Socrative                    @Edudemic

@ASCD                        @KindleTeacher (Meg Griswold, English)

@edutopia                    @kindleworld (Andrys Basten – lots of Kindle tips)

@PatBassett (Former NAIS president)

(Chrome users: don’t forget to install the Notifier for Twitter app!)

Update: I just showed my calculus students the feed on their Moodle page, and they were incredibly excited. I’m already getting lots of interaction with them!

# Kindles In The Classroom

This post isn’t particularly math-related, but I wanted to shine a spotlight on some amazing things a colleague of mine is doing with technology in her classroom. Meg Griswold teaches high school English, and at yesterday’s faculty meeting she made an outstanding presentation of all the ways she is taking advantage of the Kindle.

She uses the Kindle app on her tablet computer to quickly locate and display important passages from whatever book her class is discussing. She also has her students highlight their own passages and add notes that can be referenced later during discussion. Meg also uses Twitter to send out to her students study tips, helpful notes about book passages, or questions to be thinking about while reading.

Since so much classic literature is public domain, many titles that English courses cover are free or incredibly inexpensive. When I got my own Kindle, the first purchase I made was the complete works of Charles Dickens. Total cost: \$2.99! With the free Kindle app, students can access thousands of classic works on their smartphones or computers at little or no cost.

It is such a privilege to work with creative and pioneering educators like Meg. Check out her blog where she is chronicling her efforts to incorporate Kindles into her classes. It’s fascinating.