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Direct linkHöhne, Jan Karem; Schlosser, Stephan – International Journal of Social Research Methodology, 2019
Participation in web surveys via smartphones increased continuously in recent years. The reasons for this increase are a growing proportion of smartphone owners and an increase in mobile Internet access. However, research has shown that smartphone respondents are frequently distracted and/or multitasking, which might affect completion and response…
Descriptors: Online Surveys, Handheld Devices, Response Rates (Questionnaires), Response Style (Tests)
Odom, Arthur L.; Bell, Clare V. – Science Teacher, 2019
In 1827, Robert Brown noticed pollen suspended in water bouncing around erratically. It wasn't until 1905 that Albert Einstein provided an acceptable explanation of the phenomenon (Kac 1947): Brownian motion is the random movement of particles (e.g., pollen) in a fluid (liquid or gas) as a result of collisions with atoms and molecules. Movement of…
Descriptors: Science Instruction, Molecular Structure, Motion, Scientific Concepts
