# Picturing Functions and Functions of Pictures

I’m excited to be making my first presentation of the 2013-14 school year next week in Baltimore. Daniel Scher and I are presenting Picturing Functions and Functions of Pictures. We'll be discussing the connections between pictures and functions. These connections are even richer than I realized when I first began to work with pictures in Sketchpad. In the … Continue Reading ››

# Polar Graphing

After writing yesterday's post on the connections between polar and Cartesian graphs, I realized that I hadn't said anything about how easy it is to start from scratch and create a polar graph in Sketchpad, so I decided to write this post, and include an instructional video. Here are … Continue Reading ››

# Cartesian and Polar Graphs

The May 2013 Mathematics Teacher has an excellent article by Jonathan F. Lawes ("Graphing Polar Curves") on the value of plotting the same function in both polar and rectangular coordinates. Doing so not only helps students understand how polar coordinates work, but also gives them a novel and revealing … Continue Reading ››

# Functions Come Alive in a Precalculus Classroom

Ken Gordon has written our first in a series of guest blog posts from people working with Key Curriculum products in schools. Ken teaches Precalculus and Calculus in an accelerated program at Sisler High School in Winnipeg, Manitoba, Canada. He has been using The Geometer’s Sketchpad since first seeing it at an NCTM conference in 2004. … Continue Reading ››

# The Dynamic Number Project Comes to NCTM Philadelphia

It’s time for the NCTM Annual Meeting! For the past two and a half years, my colleague Scott Steketee and I have been collaborating with elementary teachers in New York and Philadelphia as they field test curriculum materials for the Dynamic Number project. We’ll be showcasing our work at three sessions during the upcoming … Continue Reading ››

# New Year’s Resolution—more PD!

Last year my colleagues and I traveled around the country attending conferences and workshops for mathematics educators. We also “met” thousands of teachers online when they participated in our online courses and webinars. We gave talks, hosted Ignite! events, delivered workshops, chatted to teachers who visited our booth, gave demos, encouraged people to try our … Continue Reading ››

# Resources en Español

At the recent NCTM regional conference in Albuquerque, a local teacher stopped by the booth to ask about new features of Sketchpad 5. He then shared with me his website of video lessons for Spanish-speaking students, LaracosMath.com. Some of these Continue Reading ››

# Occupy Wall Street and Quantitative Reasoning

After last week's regional NCTM conference in Atlantic City, I decided to visit New York City for the weekend before flying back home to the west coast. I love that city and, as usual, had an exceedingly good time. On Sunday, I decided to visit Occupy Wall Street, both out of curiosity and support. From what … Continue Reading ››

# Math Conference Feedback – NCTM Atlantic City, NJ

I am here at the regional NCTM math conference in Atlantic City, so just wanted to share some things I have noted while talking with teachers at our booth today. Thanks to all of you who stopped by to play with Sketchpad, Fathom, or TinkerPlots on the computers, whiteboard, or even … Continue Reading ››

# Common Core Aligned! Nice new cover.

I’m just back from the NCSM and NCTM national conferences in Indianapolis.  I have nothing but kind words for the city and venues for the conferences.  It is a wonderful location for a conference; additionally, I highly recommend the haggis at MacNiven’s Restaurant and Bar on Massachusetts Ave.Continue Reading ››