Search for dissertations about: "negative numbers"
Showing result 1 - 5 of 169 swedish dissertations containing the words negative numbers.
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1. Making Sense of Negative Numbers
Abstract : Numbers are abstract objects that we conceptualize and make sense of through metaphors. When negative numbers appear in school mathematics, some properties of number sense related to natural numbers become contradictory. The metaphors seem to break down, making a transition from intuitive to formal mathematics necessary. READ MORE
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2. What is taught and what is learned. Professional insights gained and shared by teachers of mathematics
Abstract : The aim of the thesis is to contribute to knowledge about relationships between teaching and learning in school. The framework used in this research, variation theory, states that, to improve student learning, attention must be paid to what is being learned, the capability that is to be improved and the features (critical features) that it is necessary for the learner to discern. READ MORE
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3. Resonant States in Negative Ions
Abstract : Resonant states are multiply excited states in atoms and ions that have enough energy to decay by emitting an electron. The ability to emit an electron and the strong electron correlation (which is extra strong in negative ions) makes these states both interesting and challenging from a theoretical point of view. READ MORE
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4. The influence of numbers when students solve equations
Abstract : Is it possible that some students’ primary difficulty with equation-solving is neither handling the literal symbols nor the equality, but the numbers used as coefficients? It is well known that many students find algebra a difficult topic, and there is much research on how students experience this strand of mathematics, with indications of how it can be taught. Still, a perspective not often fronted in this research – that has been suggested as an area potentially important – is how numbers, other than natural numbers, in algebra, are perceived by students. READ MORE
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5. Isolation of Circulating Tumor Cells with Acoustophoresis : Towards a biomarker assay for prostate cancer
Abstract : Microfluidics has emerged as an essential approach in the development of novel technological platforms to detect and isolate rare circulating tumor cells (CTCs) in the blood of cancer patients. Micro-scaled fluidic systems offer means to precisely control fluid flow. READ MORE