Volume 17, No. 9, May 2011
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FEATURES
3 strategies for promoting math disagreements
Angela T. Barlow and Michael R. McCrory
Engage your students in reasoning and sense making with these effective instructional plans.
Contexts for column addition and subtraction
Jorge M. López Fernández and Aileen Velázquez Estrella
Reflect and discuss - Everyday settings, like enjoying freshly baked cookies, can foster proficiency and enhance students’ conceptual understanding.
Number relationships in preschool
Myoungwhon Jung
Try these early-learning experiences to strengthen understanding of number and quantity.
Understanding place value - FREE PREVIEW!
Linda L. Cooper and Ming C. Tomayko
Exploring ancient numbers helps students focus on the structure and properties of our Hindu-Arabic system.
Online Extra: Appendix of web sites
Second Look: Place Value
Special in the May Issue
Thanks from the Editorial Panel: With appreciation
Classified Index, Volume 17, August 2010-May 2011
news&views -
Math Coaching; Professional Development; Human Genome
problem solvers: problem -
Building theaters
problem solvers: solutions - Jelly bean jumble
math by the month - In the garden
connections - Eating up mathematics
back talk - Addition problems in creative ways
Online Extra: The teacher reflection and more student thinking from “back talk”
Second Look - Place Values
"We All Have Something That Has to Do with Tens": Counting School Days, Decomposing Number, and Determining Place Value
September 2008, Volume 15, Issue 2, Page 74 – Teaching Children Mathematics
The activity of decomposing a number—having students write numerical
expressions equivalent to the number of days in school—can help students
develop understanding of place value.
The Goal of Long Division
April 2009, Volume 15, Issue 8, Page 482 – Teaching Children Mathematics
Martin describes student thinking that should be developed to
facilitate their understanding of answers resulting from division. Keys
to this understanding include the role of place value in the quotient
and the power of multiples of ten in determining the quotient.
What Is the Value of @*#? Deepening Teachers' Understanding of Place Value
April 2007, Volume 13, Issue 8, Page 434 – Teaching Children Mathematics
Teachers' mastery of base-ten may hinder their recognition of the
difficulties students have with place value, so the authors created a
number system that used five symbols to represent values. Using this
system, teachers participated in activities recognized as facilitating
understanding of place value in hopes that their struggles would mirror
those of their students.
Grouping and Grazing
Illuminations Activity:
Help the alien spaceship move cows into corrals by counting, adding,
and subtracting. This activity helps children learn grouping, tally
marks, and place value. As they master counting, they can move on to
adding and subtracting two-digit numbers.
Principles and Standard for School Mathematics
Number and Operations – PreK-2; 3-5
Free Previews
