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Showing 1 to 6 of 6 for “"fraction magnitude"”.
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A Fourth Grade Teaching Experiment on Fraction Magnitude: Investigating Student Reasoning Through Mathematical Discourse and Design Research
… in the United States continue to struggle with fraction mastery despite the fact that understanding fractions is essential for further progress in mathematics (NAEP, 2008). This research project investigated the potential of using high-press mathematical discourse (Kazemi & Stipek, 2008) to …
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An ERP investigation of symbolic and nonsymbolic fraction processing
Fractions, though important, pose significant difficulties for children and adults. It has been suggested that this difficulty may stem from a lack of an underlying cognitive system that allows us direct, intuitive access to fraction magnitude. However, there is mounting evidence that processing …
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The effect of sludge age and aerobic sludge mass fraction on low F/M filament bulking in intermittent aeration nitrogen removal systems
… focuses on the effects of; • sludge age, • magnitude of the aerobic mass fraction, • magnitude of the nitrate concentration during the anoxic period, on the low F /M filaments. The experimental set-up consisted of two intermittently. aerated anoxic-aerobic (20 minute cycles, peak DO 2 to 2,5 …
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Improving Students’ Mathematical Understanding by Engaging with the Mathematical Structure
… students’ understanding. This case focused on fractional magnitudes. For this study, instantiations are defined as mathematical concepts considered from the viewpoint of the learner. Mathematical structure consists of the instantiations alongside their properties. The pragmatic approach …
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Supporting children’s conceptual understanding of fractions with manipulatives and gesture
Fractions—their concepts, procedures, and symbolic notation—are well-known for the difficulty they present children, beginning in elementary school, and often, persisting long after. However, promoting children’s development of flexible and robust conceptual knowledge in this content area is …
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The influence of rough rolling conditions on austenite evolution in peritectic microalloyed plate steels
… steels had a lower volume recrystallized fraction magnitude in the partially recrystallized passes compared to the plain C-Mn and the C-Mn-V steels. This is considered to be due to the retardation of recrystallization by the solute drag of Nb. Pass strains of 0.15 promoted full …