Results 51 to 60 of about 11,388 (294)

Growing and growing: promoting functional thinking with geometric growing patterns

, 2010
Design research methodology is used in this study to develop an empirically-substantiated instruction theory about students' development of functional thinking in the context of geometric growing patterns. The two research questions are: 1.
Markworth, Kimberly A.
core   +1 more source

A new flow chip in combination with multiphoton microscopy as a protocol for longitudinal 3D imaging of tissue calcification under shear stress

FEBS Open Bio, EarlyView.
Miniaturized flow chip platform enabling continuous perfusion and longitudinal multiphoton 3D imaging of vascular smooth muscle cell constructs under physiological flow. Brightfield imaging guides region selection, while CellTracker Green and mRuby‐labeled fetuin‐A visualize cells and mineral deposition, respectively. Magnesium supplementation markedly
Vytautas Kučikas, Aaron D. Morgan, Ignas Čiurlionis, Christian Böhm, Stefan Jockenhövel, Willi Jahnen‐Dechent, Marc A. M. J. van Zandvoort   +6 more
wiley   +1 more source

Development of geometric thinking based on the use of didactic strategies supported by computational tools and the Van Hiele model

Assensus, 2018
This article shows a report of the research “Didactic Strategies to Strengthen Geometric Thinking Applying Computational Technologies and the Van Hiele Model”, product of the authors' degree work within the framework of the Master in Education of the SUE
Eugenio Therán Palacio, Elver Oviedo Vergara   +1 more
doaj  

Functional and Structural Evidence of Neurofluid Circuit Aberrations in Huntington Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Disrupted neurofluid regulation may contribute to neurodegeneration in Huntington disease (HD). Because neurofluid pathways influence waste clearance, inflammation, and the distribution of central nervous system (CNS)–delivered therapeutics, understanding their dysfunction is increasingly important as targeted treatments emerge.
Kilian Hett, Abigail Dubois, Melanie Leguizamon, Alexander Song, Paula Trujillo, Colin D. McKnight, Ciaran M. Considine, Manus J. Donahue, Daniel O. Claassen   +8 more
wiley   +1 more source

Revisiting Popular Frameworks of Geometric Thinking: The Case of Mariah’s Thinking About Hierarchical Relationships and Diagrams

Education Sciences
Understanding hierarchical geometric relationships represents an important step in the development of geometric thinking. However, researchers have reported challenges in the teaching of this topic to both K–12 students and preservice teachers. Prominent
Ian Whitacre, Azar Kamaldar, Domonique Caro-Rora   +2 more
doaj   +1 more source

A sixth grade student's geometric thinking: the van Hiele levels of geometric thought-constructivist approach to the phases of instruction

, 2003
Geometric shapes around us are the initial conceptions for the mathematical thinking. Geometric thought develops throughout the interval from a concrete level of geometric understanding to an abstract level of geometric perception.
Akkus, Recai
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

Enhancing Students' van Hiele Geometric Thinking Levels Through the Integration of Geometer's Sketchpad (GSP) in Geometry Learning

Qubahan Academic Journal
Van Hiele’s theory of geometric thinking describes a hierarchical progression through distinct levels, from basic visualization to advanced deductive reasoning.
Sugi Hartono, Rezky Ramadhona, Sri Irawati, Diena Frentika, Heru Tri Novi Rizki   +4 more
doaj   +1 more source

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

Fanāvarī-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, S.M. Emam jome, B. Saleh Sedghpour, A. Moradi   +3 more
doaj   +1 more source