Zobrazeno 1 - 10
of 30
pro vyhledávání: '"JudithAnn R. Hartman"'
Publikováno v:
Foundations of Chemistry. 24:239-261
Chemistry educator Alex H. Johnstone is perhaps best known for his insight that chemistry is best explained using macroscopic, submicroscopic, and symbolic perspectives. But in his writings, he stressed a broader thesis, namely that teaching should b
Publikováno v:
International Electronic Journal of Mathematics Education. 18:em0739
To learn mathematics, historically students had no choice but to memorize fundamental facts and apply memorized algorithms. Since 1995 in the US, all states have adopted standards to govern K-12 mathematics instruction, and in most, standards have de
Autor:
Diane M. Bunce, Regis Komperda, Debra K. Dillner, Shirley Lin, JudithAnn R. Hartman, Maria J. Schroeder, Melonie A. Teichert
Publikováno v:
Journal of Chemical Education. 94:1415-1424
This study examined similarities and differences in study approaches reported by general chemistry students performing at different achievement levels. The study population consisted of freshmen enrolled in a required year-long general chemistry cour
Autor:
Debra K. Dillner, Regis Komperda, Diane M. Bunce, Shirley Lin, Maria J. Schroeder, JudithAnn R. Hartman
Publikováno v:
Journal of Chemical Education. 94:11-18
Students with an insufficient amount of time to study are becoming more prevalent in the general college population as many who enroll in college have competing responsibilities (full-time jobs, childcare, etc.). Such students are likely to choose st
Autor:
Shirley Lin, JudithAnn R. Hartman
Publikováno v:
Journal of Chemical Education. 88:1223-1230
The percentage of students choosing the correct answer (PSCA) on 17 multiple-choice algorithmic questions taken from general chemistry exams is analyzed. PSCAs for these questions varied from 47 to 93%, and a decrease of 4.5% in PSCA was observed wit
Publikováno v:
Fire and Materials. 36:177-184
SUMMARY Smoke deposition patterns are a potentially rich source of information concerning the behavior of a fire. Clean burn patterns are smoke-free areas where smoke deposits have been oxidized away. In order to predict the formation of clean burn p
Publikováno v:
Fire Safety Science. 9:155-166
Maple plywood samples were heated in an oven at 180°C to a residual weight of 70%, 50%, and 30% of the virgin weight. The virgin plywood and the thermally pretreated samples were tested in a cone calorimeter over the range of 6 to 15 kW/m 2 without
Publikováno v:
Fire and Materials. 31:359-371
This study measured the Arrhenius kinetic parameters and heat of reaction using thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) for the combustion of untreated towels and towels treated with cerium(IV) nitrate. These par
Publikováno v:
Fire and Materials. 30:223-240
This study evaluated the ignitability of cotton towel material saturated with all oxidizer solution of 0.5 N cerium nitrate in 2N nitric acid. Four types of ignition testing were performed in this work: self-heating oven tests, hot object ignition te
Publikováno v:
Inorganica Chimica Acta. 357:51-58
The synthesis and characterization of the nickel(II) complexes of a series of pentadentate and hexadentate aminopyridine ligands that contain ethylenediamine and/or propylenediamine groups are described. The ligands include: 1,12-bis(2-pyridyl)-2,5,8