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## Tracking Decimal Misconceptions: Strategic Instructional Choices

Strategic instructional choices can simultaneously address common decimal misconceptions and help students race toward decimal understanding.

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## Mapping a Way to Decimal Understanding

Using Cuisenaire Rods, metric measurement, and mapping, students worked collaboratively to calculate, keep records, build, and problem solve with use of decimal fractions as a key element.

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## What is your body mass index?

The number of people who are obese or overweight has dramatically increased throughout the world in recent years. This article presents an activity in which fifth- and sixth-grade students analyzed body mass index (BMI) and planned a diet accordingly; an interactive simulation supported the creation of a healthy eating regimen. iSTEM (Integrating Science, Technology, and Engineering in Mathematics) authors share ideas and activities that stimulate student interest in the integrated fields of science, technology, engineering, and mathematics (STEM) in K–grade 6 classrooms.

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## Disabilities in Written Expression

Classroom activities can be part of an effective teaching strategy to help children whose math performance demonstrates a learning deficit.

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## Building Understanding of Decimal Fractions

Using grids can help students overcome confusion about place value.

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## Solutions: The pizza party

Each month, this section of the Problem Solvers department showcases students' in-depth thinking and discusses the classroom results of using problems presented in previous issues of Teaching Children Mathematics. The March 2015 problem challenges students to determine how many pizzas they need to order for a class party. During this investigation, students have the opportunity to explore the meaning of division and to examine, compare, and connect additive and multiplicative strategies that may be used to solve this division problem.

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## Moving Math in the Write Direction

Use debate journals as an innovative way to encourage your students to construct mathematical arguments as well as examine and critique others' mathematical thinking.

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## A critical focus on the M in STEAM

Contributors to the iSTEM (Integrating Science, Technology, Engineering, and Mathematics) department share ideas and activities that stimulate student interest in the integrated fields of science, technology, engineering, and mathematics (STEM) in K–grade 6 classrooms. The authentic STEAM project described here was born of a critical need of one child in the community. Using the Design Thinking framework, a class of fourth graders embarked on what was arguably the most meaningful school project of their lives. We place an explicit focus on the M in STEAM.

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## Assessments: Numbers, Context, Graphics, and Assumptions

Learn how to modify classroom evaluation items to avoid potential difficulties that limit a teacher's insight into students' mathematical understanding.

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## Winning the “Hundred Years' War”

Arm your students for victory in the age-old battle to master subtraction with regrouping.