The use of different representations in teaching algebra, 9 th grade (14-15 years old)
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چکیده
منابع مشابه
DMFT and SiC Indices in 15-years-old female students in the city of Rasht, Iran
Background:DMFT index is the most common caries detecting index worldwide. The aim of present study was to determine DMFT as well as the prevalence of highest caries rate or Significant Caries Index (SiC), among 15 years of age female students in the city of Rasht, Iran. Materials and methods: In this descriptive cross-sectional study, 228 female students were selected using stratified multi-st...
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Introduction: Permanent first molar is the most important unit in the chewing system. Ear-ly loss of first molars can significantly reduce chewing efficiency, increase overbite, lead to premature eruption of the permanent second and third molars, and displacement of adjacent teeth. The purpose of this study was to determine the associated factors of permanent first molar caries in 7-9 years old...
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Introduction: Muslims fast from dawn to dusk during Ramadan. The effects of prolonged food deprivation on endocrine hormones have been studied in healthy adults but no previous study has investigated this effect on children. This study aimed to evaluate the feasible changes in serum level of thyroxin (T3), tetraiodothyronin (T4), thyroid stimulating hormone (TSH) and body composition in pre-men...
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BACKGROUND AND AIM: Malocclusions are major traits whose prevalence should be noticed, by gender, among high school students to program oral health status in a society and clarify the needs and demands of this orthodontic field. METHODS: In a cross-sectional population-based study, using a stratified random cluster sampling design, a sample of 1338 students of Shiraz, aged 14-18 years from 15 h...
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Introduction: Malocclusion is a common oral disease that, in addition to damaging the functioning of the oral system and hygiene, can harm a person’s social relationships and mood by negatively affecting their beauty and self-esteem and reduce the quality of life. Many malocclusions, if detected, can be corrected at the right time by spending less time and money, which plays a significant role ...
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ژورنال
عنوان ژورنال: Teaching Mathematics and Computer Science
سال: 2014
ISSN: 1589-7389
DOI: 10.5485/tmcs.2014.0350