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Teachers — Training of
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Division
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1.

## What's the Price? [electronic resource]

Third-graders use problem-solving approaches to investigate and understand division. They make connections to everyday life and use calculators as they determine unit costs for two different boxes of cereal.Covers the following NCTM Standards: concepts of whole number operation, fractions and decimals, problem solving, and communication.
Online
1997
2.

## Arrays and Fractions [electronic resource]

A first- through third-grade class investigates fractional parts of a set by building arrays that represent wholes of different sizes. In their task they use mathematical language and symbols and form mathematical connections among concepts of addition, area, multiplication, division, and fractions. Covers the following NCTM standards: fractions and decimals, number sense and numeration, reasoning, and communication.
Online
1997
3.

## Cookies to Share [electronic resource]

Through a story about sharing cookies, fourth-graders investigate the problem of dividing eight cookies among 12 children. It helps them develop meaning for the concept of division and leads to the use of fractions. Covers the following NCTM standards: fractions and decimals, number sense and numeration, communication, and connections.
Online
1997
4.

## Meanings and Models for Operations [electronic resource]

Examines the operations of addition, subtraction, multiplication, and division and their relationships to whole numbers. Works with area models for multiplication and division. Explores the use of two-color chips to model operations with positive and negative numbers.
Online
2003