This article explores the use of children's photography as a method for conducting mathematics education research with young children. Collected as part of a study focusing on the experiences with measurement children have at the start of schooling, the photographs presented here were taken by children aged five and six years, from two Australian…

In this paper I explore how Margaret Beier, Lesley Miller, and Shu Wang make claims for the validity and reliability of the instrument they developed to explore the construct of "possible selves" as described in their manuscript, "Science Games and the Development of Scientific Possible Selves."

Rupture resistance is a measure of the strength of a soil to withstand an applied stress or resist deformation. In soil survey, during routine soil descriptions, rupture resistance is described for each horizon or layer in the soil profile. The lower portion of the rupture resistance classes are assigned based on rupture between thumb and…

The prevailing tendency in modern university reforms is towards "how people learn," following a learner-centered approach in which the learner is the main actor of the teaching-learning process. As a consequence, one of the key indicators of the teaching-learning process is the measurement of learner satisfaction within the classroom.…

Calibration is a technique that is commonly used in science and engineering research that requires calibrating measurement tools for obtaining more accurate measurements. It is an important technique in various industries. In many situations, calibration is an application of linear regression, and is a good topic to be included when explaining and…

A personal colorimetric dosimeter for nitrogen dioxide was developed. Tests were performed to determine the response of these strips to various concentrations of NO2. The dosimeter strips were satisfactory for approximate determinations of total exposure (concentration + time) of nitrogen dioxide. The total exposure was calculated in terms of time…

Describes surface-finish characteristics and presents an approach by which the teacher may incorporate these new materials into a course of study. (GR)

THE AIM OF THIS STUDY WAS TO IDENTIFY AND SET TONE-REGISTER BOUNDARIES, AND TO DESCRIBE TONAL CONTOURS OF SINGLE WORDS AND COUPLETS IN TERMS OF WHAT GOOD MANDARIN CHINESE SPEAKERS ACTUALLY DO. THE STUDY WAS BASED ON ISOLATED AND COUPLED WORDS OF HIGH LINGUISTIC FREQUENCY, WHICH WERE RECORDED BY 18 PROFESSORS OF MANDARIN CHINESE ON NARROW-BAND…

An on-stack transmissometer system, that is designed to provide a precision measurement of the opacity of visible emissions, is described. The sources of error in opacity measurements with regard to recent Environmental Protection Agency emission monitoring requirements and planned specifications are discussed. (Author/BT)