Posters, commonly employed for decoration, can be used to introduce and practice new concepts and help assess student learning.

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## Quick Reads: Posters: More Than Just for Looks

### a good idea in a small package

### Greisy Winicki-Landman and Christine Latulippe

### Beste Güçler

When communicating mathematical ideas to students, teachers must elaborate explicitly on the elements of their discourse. This article focuses on one instructor's and his students' discourse on limits in a beginning-level calculus classroom.

### Jeffrey M. Choppin, Carolyn B. Clancy, and Scott J. Koch

Allowing students to reason and communicate about integer operations, or any idea, before these ideas are formalized can be an important tool for fostering deep understanding.

### Ann C. McCoy, Rita H. Barger, Joann Barnett, and Emily Combs

While filling vases with water and observing volume and height relationships, students learn the fundamentals of functions.

## Informing Practice: Examples as Tools for Constructing Justifications

### research matters for teachers

### Kristen N. Bieda and Jerilynn Lepak

Research explores how to help students build from, instead of building with, examples when justifying mathematical ideas.

## Quick Reads: Word Clouds in Math Classrooms

### a good idea in a small package

### Jennifer Nickell

Word clouds, a new organizational and communication tool being used in classrooms, can easily be incorporated into math class.

### Rheta N. Rubenstein and Denisse R. Thompson

A tool used in reading theory is adapted to help mathematics teachers ask good questions that help students interpret displays of information.

### Stacy L. Reeder and George E. Abshire

Meaningful discourse occurs when tasks are chosen carefully and when the teacher steps back and allows students to move to the forefront of their own learning.

### J. Bradford Burkman

Three sessions at the Joint Meetings revealed either poor or improving communication between high schools and colleges about what courses colleges want students to take in high school.

### Paul Laumakis

Students bring the real world into the classroom by studying speeding data collected on two Pennsylvania highways.