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DeJarnette, Anna F.; Rosado Lausell, Sahid L.; González, Gloriana – Mathematics Teacher, 2015

How can geometry teachers design great tasks that allow students to make connections among interrelated concepts and expand their geometric reasoning skills? Many curricular materials provide problems for students to apply a single geometric concept. However, these problems do not always promote reasoning opportunities for students, because…

Descriptors: Geometry, Geometric Concepts, Task Analysis, Mathematics Activities

Viro, Julia – Mathematics Teacher, 2014

Constructing viable arguments and reasoning abstractly is an essential part of the Common Core State Standards for Mathematics (CCSSI 2010). This article discusses the scenarios in which a mathematical task is impossible to accomplish, as well as how to approach impossible scenarios in the classroom. The concept of proof is introduced as the…

Descriptors: Mathematics Instruction, Mathematical Concepts, Validity, Mathematical Logic

Gonzalez, Gloriana; DeJarnette, Anna F. – Mathematics Teacher, 2013

What does problem-based instruction do for students and teachers? The open-ended geometry problem presented in this article, along with examples of students' work on the problem, illustrates how problem-based instruction can help students develop their mathematical proficiency. Recent studies have shown that students who experience problem-based…

Descriptors: Mathematical Logic, Mathematics Instruction, Geometry, Geometric Concepts

Touval, Ayana – Mathematics Teacher, 2009

The kinematics teaching strategy is a teaching method that stimulates kinesthetic intelligence and thus offers students an unconventional approach for exploring mathematical ideas through movement. This article describes how to use the kinesthetic approach to introduce radian measure. The article includes detailed descriptions of easy-to-use…

Descriptors: Mathematics Instruction, Measurement Techniques, Teaching Methods, Learning Activities

Cooper, Brett D.; Barger, Rita – Mathematics Teacher, 2009

The many connections between music and mathematics are well known. The length of a plucked string determines its tone, the time signature of a piece of music is a ratio, and note durations are measured in fractions. One connection commonly overlooked is that between music and geometry--specifically, geometric transformations, including…

Descriptors: Music, Geometric Concepts, Geometry, Music Activities

Bannon, Thomas J. – Mathematics Teacher, 2009

In this article, the classic problem of finding three ways to determine the probability that the pieces of a stick randomly broken in two places will form a triangle is analyzed anew. To be useful in the classroom, an application must be incorporated into an often-crowded curriculum. What is nice about this triangle problem is that it fits in…

Descriptors: Geometric Concepts, Probability, Geometry, Mathematics Instruction

Ventress, Andy – Mathematics Teacher, 2008

This article describes the use of digital images of real-life phenomena and interactive software to carry out mathematics investigations. (Contains 13 figures.)

Descriptors: Computer Software, Mathematical Models, Educational Technology, Photography