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Download full textHorvat, Saša A.; Rodic, Dušica D.; Roncevic, Tamara N.; Babic-Kekez, Snežana; Horvat, Bojana Trifunovic – International Baltic Symposium on Science and Technology Education, 2021
Mathematical calculations are an important part of chemistry. Those problems are difficult for students, especially if the task is set with a limiting reactant. The aim of this study was development of a Procedure for evaluation of cognitive complexity of the Stoichiometric Tasks with a Limiting Reactant. The procedure created included an…
Descriptors: Likert Scales, Chemistry, Science Instruction, Task Analysis
Direct linkKamphorst, Floor; Vollebregt, M. J.; Savelsbergh, E. R.; van Joolingen, W. R. – Physical Review Physics Education Research, 2019
Special relativity theory (SRT) has recently gained popularity as a first introduction to "modern" physics thinking in upper level secondary physics education. A central idea in SRT is the absolute speed of light, with light propagating with uniform speed relative to the reference frame of the observer. Previous research suggests that…
Descriptors: Light, Physics, Science Instruction, Scientific Concepts
Minkley, Nina; Kärner, Tobias; Jojart, Atila; Nobbe, Lasse; Krell, Moritz – Journal of Research in Science Teaching, 2018
In science education, representations are necessary inter alia for the understanding of relationships between structures and systems. However, several studies have identified difficulties of students when working with representations. In the present study, we investigated students' responses (regarding their preference, test performance, mental…
Descriptors: Cognitive Processes, Difficulty Level, Scientific Concepts, Molecular Structure
Tekkumru-Kisa, Miray; Stein, Mary Kay; Schunn, Christian – Journal of Research in Science Teaching, 2015
Many countries, including the United States, emphasize the importance of developing students' scientific habits of mind and their capacity to think deeply about scientific ideas in an integrated fashion. Recent science education policies in the United States portray a related vision of science teaching and learning that is meant to guide the…
Descriptors: Task Analysis, Cognitive Processes, Difficulty Level, Science Instruction
Miha Slapnicar; Iztok Devetak; Saša A. Glažar; Jerneja Pavlin – Journal of Baltic Science Education, 2017
The aim of the research was to identify how Slovenian primary and secondary school students of various age groups explain the particulate nature of the states of matter of water and air. The qualitative research included five 12, 14, and 16 year old students. A semi-structured interview including four computer-displayed tasks was used for the data…
Descriptors: Science Education, Problem Solving, Scientific Concepts, Teaching Methods
Emigh, Paul J.; Passante, Gina; Shaffer, Peter S. – Physical Review Special Topics - Physics Education Research, 2015
The time evolution of quantum states is arguably one of the more difficult ideas in quantum mechanics. In this article, we report on results from an investigation of student understanding of this topic after lecture instruction. We demonstrate specific problems that students have in applying time dependence to quantum systems and in recognizing…
Descriptors: Quantum Mechanics, Lecture Method, Concept Teaching, Scientific Concepts
