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Walkup, John R.; Key, Roger A.; Duncan, Sean Patrick; Sheldon, Avery E.; Walkup, Michael A. – Physics Education, 2020
Error analysis consumes much of the focus in introductory physics labs. Catastrophic cancellation is a spike in error that occurs when subtracting two measurements of roughly equal magnitude. Often termed "loss of significance" or "subtractive cancellation," this effect can easily relegate experimental results to utter…
Descriptors: Physics, Science Instruction, Laboratory Experiments, Teaching Methods
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Cons, Andrea Marie – TESOL Journal, 2012
This study investigated the specific ways secondary English learners (ELs) and redesignated fluent English-proficient learners (RFEPs) use academic vocabulary that assesses interpretive reading and analytical writing ability. The research examines how ELs and RFEPs, formerly ELs, differ in use and misuse of academic words. The study extends…
Descriptors: Language Usage, Academic Discourse, Secondary School Students, English (Second Language)