Година XXIV, Книжка 5, 2015Следващ бройАрхивПредишен брой
Учебно съдържание, планове, програми и стандарти
Ефективност на обучението
МУЛТИМЕДИЙНИТЕ ТЕСТОВЕ ПО ГЕОГРАФИЯ
През последните години в практиката на провеждането на национални състезания, фестивали и олимпиадата по география се наложиха мултимедийните тестове. Структурирането и умелото им използване за обективна оценка на знанията и уменията на обучаемите засега оста...
geography education, multimedia tests, geography olympiads and competitions, matriculation exams
ДИСТАНЦИОННИТЕ АСТРОНОМИЧЕСКИ НАБЛЮДЕНИЯ – ИНОВАЦИЯ В ОБУЧЕНИЕТО ПО АСТРОНОМИЯ
Статията показва предимствата на дистанционните астрономически наблюдения като нов подход в обучението по астрономия. Представени са резултатите от нашите дистанционни наблюдения с телескопите „Фолкс“ в реален учебен процес. Този метод на research-базирано о...
interactive educational methods, telescopes, astronomical observations
IRANIAN UNIVERSITY STUDENTS’ PERCEPTION OF CHEMISTRY LABORATORY ENVIRONMENTS
This article reports the development, validation and application of a Persian version of the Science Laboratory Environment Inventory (SLEI). The SLEI was carefully translated into Persian and field tested with a sample of 311 Iranian university students in 2...
chemistry laboratory environment, SLEI, learning environments research, satisfaction
В изследователските лаборатории
APPLICATION OF LASER INDUCED BREAKDOWN SPECTROSCOPY AS NONDESDUCTRIVE AND SAFE ANALYSIS METHOD FOR COMPOSITE SOLID PROPELLANTS
Nowadays many methods have been proposed for the analysis and evaluation of the energetic materials and their properties. In this work, laser induced breakdown spectroscopy (LIBS) as a new method was introduced as a safe and nondestructive analysis method t...
Laser Induced Breakdown Spectroscopy (LIBS), solid composite propellant, HTPB, safety
THE EFFECT OF DIOCTYLPHTHALATE ON INITIAL PROPERTIES AND FIELD PERFORMANCE OF SOME SEMISYNTHETIC ENGINE OILS
Several semisynthetic engine oils containing solvent neutral-150 (SN-150) and solvent neutral-500 (SN-500) as mineral constituent and di-2-ethyl-hexylphthalate (DOP) as synthetic constituent has been formulated. Physical properties of the prepared oils have b...
lubricants, SN-150, SN-500, ester, DOP, engine oils, ICP-OES, engine oil, biodegradability, wear