Results 121 to 130 of about 160,573 (296)

The Analysis of Grade VIII Spatial Visual Abilities at SMP Negeri 3 Ampibabo in Understanding the Concept of a Quartend Based on Van Hiele’s Geometry Thinking Levels

Journal of Medives: Journal of Mathematics Education IKIP Veteran Semarang
This research aims to describe students' visual spatial abilities in understanding the concept of quadrilaterals in terms of the Van Hiele level of geometric thinking.
Nur Janah, Sukayasa Sukayasa, Dasa Ismaimuza, Welli Meinarni   +3 more
doaj   +1 more source

On proof and progress in mathematics

, 1994
In response to Jaffe and Quinn [math.HO/9307227], the author discusses forms of progress in mathematics that are not captured by formal proofs of theorems, especially in his own work in the theory of foliations and geometrization of 3-manifolds and ...
Thurston, William P.
core  

Introduction to the papers of TWG04: Geometrical Thinking

, 2015
The paper presents the contribution to the TWG 6 on geometrical thinking.
Ceretkova, Sona, Chesnais, Aurélie, Maschietto, Michela, Mithalal, Joris, Richard, Philippe, Swoboda, Ewa   +5 more
openaire   +2 more sources

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

The use of Van Hiele’s geometric thinking model to interpret Grade 12 learners’ learning difficulties in Euclidean Geometry

Perspectives in Education
The 21st-century mathematics classrooms should equip learners with well-grounded knowledge and thinking skills pertaining to geometry. However, Euclidean geometry remains one of the challenging, if not the most difficult topic for many learners.
Fungirai Mudhefi, Koena Mabotja, Dimakatjo Muthelo   +2 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Teaching linear algebra at university

, 2002
Linear algebra represents, with calculus, the two main mathematical subjects taught in science universities. However this teaching has always been difficult. In the last two decades, it became an active area for research works in mathematics education in
Dorier, Jean-Luc
core   +1 more source

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

Advanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier, Moritz Blum, Luana Caron, Alisa Chirkova, Philipp Cimiano, Basil Ell, Inga Ennen, Michael Feige, Maik Gaerner, Thomas Hilbig, Andreas Hütten, Günter Reiss, Tapas Samanta, Sonja Schöning, Christian Schröder, Lennart Schwan, Chris Taake, Martin Wortmann   +17 more
wiley   +1 more source

Design and Evaluation of a mobile application for achieving computational thinking skills through geometric transformation learning in middle school

Infinity
Several studies indicate that students frequently make errors when determining the resulting reflection of geometric transformations. On the other hand, several studies mention that mobile applications have been proven effective in reducing conceptual ...
Faizah Nurwita, Yaya Sukjaya Kusumah, Dadang Juandi   +2 more
doaj   +1 more source

Numerical Exploration of Thermal Shock Resistance in MgO–C Refractories

Advanced Engineering Materials, EarlyView.
A mesostructure‐resolved numerical framework is developed to evaluate the thermal shock resistance of MgO–C refractories. By modeling interface debonding under rapid temperature changes and introducing a modified thermal shock parameter that accounts for mesocracks, the study shows how graphite content and aggregate size influence thermal shock ...
Jishnu Vinayak Gopi, Stephan Roth, Christos G. Aneziris, Bjoern Kiefer   +3 more
wiley   +1 more source