## How Wedge You Teach the Unit-Angle Concept?

This article from the NCTM journal Teaching Children Mathematics describes a lesson used to help fifth-grade students rethink the unit and tool used to measure an angle. The author, Gayle M. Millsaps, describes how this lesson led to a conclusion that supports using an inquiry approach rather than the traditional introduction to using protractors to measure angles.

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http://www.nctm.org/publications/article.aspx?id=32126

## Investigating Measurement Knowledge

This article describes the collaboration between a researcher, Jenni McCool, and a fifth-grade teacher, Carol Holland, as they use two fifth graders’ assessment results to inform the whole-class instruction. The authors describe the process they used and the insight gained into the students’ conceptual knowledge of measurement.

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http://www.nctm.org/publications/article.aspx?id=33156

## Inchworm and a Half: Developing Fraction and Measurement Concepts Using Mathematical Representations

This article describes the use of the book “Inchworm and a Half” to stimulate children's investigations in measurement and number. The authors, Patricia Moyer and Elizabeth Mailley, describe a two-day lesson during which children used physical models and visual representations to develop measurement skills and explore equivalent relationships. The article includes a worksheet idea, student solutions, and reflections on their work.

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http://www.nctm.org/publications/article.aspx?id=21473

## Break the Area Boundaries: Reflect and Discuss

In this article, authors Amy McDuffie and Norma Eve describe how a professional learning team redesigns a lesson aimed at helping second graders understand area by covering physical surfaces with many identical units. The article is from the NCTM journal Teaching Children Mathematics.

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http://www.nctm.org/publications/article.aspx?id=24527

## Understanding Linear Measure

In this article from the NCTM journal Teaching Children Mathematics, teachers are encouraged to push instruction beyond procedures. The authors, Leslie C. Dietiker, Funda Gonulates, and John P. Smith III provide information about how to enhance student tasks and offer better opportunities to develop conceptual understanding.

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http://www.nctm.org/publications/article.aspx?id=31414

## Early Childhood Corner: Ladybugs and Lengths: Beginning Measurement

In this article Andrew Tyminski, Monica Weilbacher, Nicole Lenburg and Cindy Brown focus on a sequence of lessons used to develop kindergarten students' conceptual understanding of measuring length. The article presents ideas of how to provide experiences for young students that help them to develop meaningful understanding of length, units, rulers and measurement. It addresses the early childhood teachers' need to support young children's emerging mathematics understanding in a context that conforms to current knowledge about the ways young children learn mathematics.

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http://www.nctm.org/publications/article.aspx?id=22224

## Reasoning and Sense Making

What does a new policy publication for high school mathematics have to do with you and elementary school mathematics? Everything! Learn why from authors W. Gary Martin and Lisa Kasmer in this article from the NCTM journal Teaching Children Mathematics.

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http://www.nctm.org/publications/article.aspx?id=24590

## On the Write Path: Improving Communication in an Elementary Mathematics Classroom

This article from the NCTM journal Teaching Children Mathematics describes the process that teachers used to increase communication during problem-solving investigations. The authors, Melissa Anderson and Deena Little, provide examples of students’ struggles and successes.

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http://www.nctm.org/publications/article.aspx?id=21520

## Promoting Communication in the Mathematics Classroom

The authors of this article, Phyllis and David Whitin, emphasize the importance of children representing their mathematical understanding in many different ways. These modes of communication include building, writing, drawing, and talking. The article is from the NCTM journal Teaching Children Mathematics.

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