No abstract

No abstract

No abstract

This article describes an engaging datagathering activity that involves exploring relationships between latitude and average monthly temperatures of cities in the Western Hemisphere. Our extensive work with middle school and high school students has confirmed this activity's attractive features: It is elastic (i.e., it can be adapted for use in either algebra 1 or algebra 2); it is interdisciplinary and can be taught through team teaching; and it requires wise and effective use of technology.

This study explored the themes that comprise preservice teachers' attitudes regarding discourse in the K-12 mathematics classroom. The initial development of the theory underlying preservice teachers' attitudes regarding mathematical discourse is documented through the development of a 5-point Likert instrument. Analysis of the Preservice Teachers' Attitudes About Discourse in the Mathematics Classroom (PADM) Instrument (N = 277) resulted in three reliable factors: Promoting Mathematical Reasoning ( = .85), Examining Complex Mathematical Concepts ( = .81), and Valuing Students' Mathematical Ideas ( = .85). These results suggest a framework that mathematics educators can employ to address preservice teachers' attitudes regarding discourse in an effort to support their implementation of reform-based discourse in the teaching of mathematics in their future classrooms. School Science and Mathematics 70Development of the PADM Insturment 71Volume 107 (2)