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| | Articles of Volume : 1 Issue : 26 ( 16, January - 2014) | | | | 60 | Absorption and Emission Properties of Pr(III) doped Calcium Borax Glasses | | By : Sujeet Jain and Chanchal Porwal | | Abstract : Optical absorption and photoluminescence spectra of Pr(III) doped calcium borax glasses are presented. The observed spectra have been analyzed to calculate oscillator strengths (ƒ), the Judd-Ofelt intensity parameters (Ù ). The ë radiative parameters namely, transition probabilities (A, Aô), branching ratios 2 (â %), lifetimes (ô ìsec) and stimulated emission cross-sections (óP ëcm ) are R R also evaluated for the different glass compositions and shown to change with chemical compositions. | | | | Author Profile | Full-Text PDF | |
| | | 63 | Comparing Probe And Participatory Teaching Method Effect On Critical Thinking Skills | | By : Zahra Heidari soufiani , Maryam Najafi moghadamnejhad , Hasan Sabet divshali , Rahmatollah Kharazmi rahimabadi | | Abstract : Present research aim is to compare probe and participatory teaching method
effect on fourth grade science study students critical thinking skills similar to
semi – experimental method in introductive and final test plan by evidence
group and using available case. This research statistical community is all
fourth grade students in 11817numbers, that 90 students selected through
case title available sampling method in three groups with 30 ones. Measuring
tool is critical thinking skills test and to analyse data has used descriptive
statistics ( frequency distribution, percent ,mean and variance ) and in
deductive statistics has used one way variance analysis test ( an nova) and
tukey actional test in comparing binary effect to study probe and participatory
methods effect and obtained results have indicated that probe teaching
method has had more effect than participatory teaching method on studying
group s. In other words, students that trained by probe teaching method got
higher grades than control group and participatory teaching group.
Also probe teaching method has more effect on comparing and
detection skill but participatory teaching method indicates more effect on
students adjudication skill. | | | | Author Profile | Full-Text PDF | |
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