Results 31 to 40 of about 160,573 (296)

Prospective Teachers’ Learning in Geometry: Changes in Discourse and Thinking [PDF]

open access: yes, 2013
This study investigates changes in prospective teachers’ levels of geometric thinking and the development of their geometric discourses in the classification of quadrilaterals. To examine prospective teachers’ thinking about geometry, this study connects
Wang, Sasha
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

open access: yesFEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee   +3 more
wiley   +1 more source

Analysis of the Level of Geometric Thinking of Pupils in Slovakia

open access: yesEducation Sciences
This study is focused on the analysis of the level of geometric thinking of 15-year-old Slovak pupils in relation to the difficulty of geometric problems, their gender, and their assessment in mathematics.
Katarína Žilková   +2 more
doaj   +1 more source

PROSES BERPIKIR ALJABAR PADA SISWA KELAS VIII DALAM MENYELESAIKAN SOAL POLA GEOMETRIS

open access: yesPaedagoria, 2021
Abstrak: Berpikir aljabar merupakan hal yang penting karena untuk mengembangkan kemampuan berpikir siswa. Proses ini diawali dengan mengekstraksi informasi kemudian menyajikan informasi tersebut dan menafsirkan temuan.
Eny Suryowati, Lia Budi Tristanti
doaj   +1 more source

Geometric thinking in learning distance and angle

open access: yesJournal of Physics: Conference Series, 2021
AbstractSolid geometry is an essential science that students should master because students encounter it in the real world. Students’ geometric thinking ability is still low because they have difficulty understanding the concepts. The purpose of this study was to determine the comparison of the achievement and increase in geometric thinking skills of ...
openaire   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Assessing mathematics teachers’ knowledge of geometry based on Van Hiele Model of Geometric Thought [PDF]

open access: yesFanāvarī-i āmūzish, 2010
The purpose of this study is to assess the mathematics teachers’ knowledge of geometry based on Van Hiele Model of Geometric Thought. 38 pre-service and 12 in-service mathematics teachers participated in this study.
E. Reyhani   +3 more
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Perception of Symmetry and Spatial Reasoning in 11–12-Year-Old Pupils

open access: yesEducation Sciences
Visual perception and visualization are crucial in mathematical thinking and, more importantly, in geometric thinking. Our research study aimed to follow the link of geometric transformations, mental rotation, spatial ability, and visualisation in ...
Mária Kmetová, Lucia Rumanová
doaj   +1 more source

AAA+ protein unfoldases—the Moirai of the proteome

open access: yesFEBS Letters, EarlyView.
AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley   +1 more source

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