# Browse

## You are looking at 1 - 10 of 12items for :

• Representations
• Communication
• Refine by Access: All content
Clear All
Restricted access

## GPS: From Folding to Dynamic Geometry Environments

In this month's Growing Problem Solvers, we focused on supporting students' understanding of congruence and similarity through rigid motions and transformations. Initial understandings of congruence and similarity begin in first grade as students work with shapes in different perspectives and orientations and reflect on similarities and differences.

Restricted access

## Problems to Ponder

Problems to Ponder provides 28 varied, classroom-ready mathematics problems that span grades PK-12, arranged in order of grade band. Links to the problem answers are available in this department.

Restricted access

## Using Covariation Reasoning to Support Mathematical Modeling

Table representations of functions allow students to compare rows as well as values in the same row.

Restricted access

## Spaghetti Sine Curves: Virtual Environments for Reasoning and Sense Making

The Spaghetti Sine Curves activity, which uses GeoGebra applets to enhance student learning, illustrates how technology supports effective use of physical materials.

Restricted access

## Develop Reasoning through Pictorial Representations

Solutions coupled with drawings can illustrate students' understandings or misunderstandings, particularly in the area of proportional reasoning.

Restricted access

## Sorting Out Ideas about Function

A card-sorting task can help students extend their understanding of functions and functional relationships.

Restricted access

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

Restricted access

## Stop Teaching and Let Students Learn Geometry

A geometry course for teachers—easily adaptable to a high school geometry class—integrates technology, reasoning, communication, collaboration, reading, writing, and multiple representations.

Restricted access

## When pictures just will not do

Restricted access

## Delving into Limits of Sequences

Through these calculus activities, students reach an understanding of the formal limit concept in a way that enables them to construct the formal symbolic definition on their own.