Patterns in the Multiplication Table

1985 ◽  
Vol 32 (7) ◽  
pp. 36-40
Author(s):  
Cornelia C. Tierney
Keyword(s):  
Eighth Graders ◽  
Multiplication Table ◽  
Similar Amount ◽  
Concerted Effort ◽  
Great Range ◽  
Whole Process ◽  
Whole Number ◽  
Whole Number Arithmetic ◽  
Number Facts ◽  
Better Than

In elementary school, great importance is placed on memorization of number facts. In teaching fifth through eighth graders, 1 have assumed that most of my students had made a concerted effort to memorize facts in earlier grades. I have observed. however, that children who have had a similar amount of practice have a great range of recall. A few students complete tests of 100 multiplication or division facts perfectly in less than three minutes, whereas others are made miserable by the whole process. They skip many problems, look around the room to compare their progress with that of other students, and finally give up with few correct answers. Although those who have memorized the facts do better than others at whole-number arithmetic, they do not always do well in work with fractions.

Research of Flash Automatic Marking Based on Logical Formal

2012 ◽  
Vol 468-471 ◽  
pp. 2849-2853
Author(s):  
Wei Zheng ◽  
Ya Ping Wu ◽  
Yao Fei Chen
Keyword(s):  
Formal Method ◽  
Formal System ◽  
Average Error ◽  
Formal Description ◽  
Whole Process ◽  
Better Than

The author proposes a scheme of flash automatic marking based on animation effects. Describe the question's marking information by using the logical formal method. Achieve automatic marking by building the logical formal system. Focuses on two components of the scheme: logical formal description and SWF to XML. Describes the whole process of logical formal marking with example. Analysis of manual and automatic marking shows that: logical Formal automatic marking error is better than the manual average error.

Brief Reports: Fraction Knowledge in Preschool Children

1988 ◽  
Vol 19 (2) ◽  
pp. 175-180
Author(s):  
Robert P. Hunting ◽  
Christopher F. Sharpley
Keyword(s):  
Preschool Children ◽  
School Mathematics ◽  
The Core ◽  
Whole Number ◽  
Whole Number Arithmetic ◽  
Number Knowledge

Much school mathematics is devoted to teaching concepts and procedures based on those units that form the core of whole number arithmetic (ones, tens, hundreds, etc.). But other topics such as fractions and decimals demand a new and extended understanding of units and their relationships. Behr, Wachsmuth, Post, and Lesh (1984) and Streefland (1984) have noted how children's whole number ideas interfere with their efforts to learn fractions. Hunting (1986) suggested that a reason children seem to have difficulty learning stable and appropriate meanings for fractions is that instruction on fractions, if delayed too long, allows whole number knowledge to become the predominant scheme to which fraction language and symbolism is then related.

Semantic alignment across whole-number arithmetic and rational numbers: evidence from a Russian perspective

2017 ◽  
Vol 24 (2) ◽  
pp. 198-220 ◽  
Author(s):  
Yulia A. Tyumeneva ◽  
Galina Larina ◽  
Ekaterina Alexandrova ◽  
Melissa DeWolf ◽  
Miriam Bassok ◽  
...  
Keyword(s):  
Rational Numbers ◽  
Whole Number ◽  
Semantic Alignment ◽  
Whole Number Arithmetic

scholarly journals How to circumvent the limitations of open source software and orthorectify how (or better) than with commercial software

2020 ◽  
Author(s):  
Valerio Baiocchi ◽  
Roberta Onori ◽  
Felicia Monti ◽  
Francesca Giannone
Keyword(s):  
Open Source ◽  
Satellite Images ◽  
Research Work ◽  
Three Dimensional ◽  
Commercial Software ◽  
Whole Process ◽  
High Resolution Satellite Images ◽  
Open Source Gis ◽  
Gis Software ◽  
Better Than

<p>High and very high resolution satellite images are now an irreplaceable resource for earth observation in general and for the extraction of hydrogeological information in particular. In order to use them correctly and compare them with previous surveys and maps, they must be treated geometrically to remove the distortions introduced by the acquisition process. Orthorectification is not a simple georeferencing because the process must take into account the three-dimensional acquisition geometry of the sensor. For this reason orthorectification must be performed within specific commercial software with additional costs compared to image acquisition which, in some cases, is currently free of charge.<br>Some orthorectification algorithms, mainly based on the RPC approach, are available in open source GIS software such as QGIS. OTB (Orpheus toolbox) for QGIS contains some of these algorithms but its interfaces are not clear and there are some incomprehensible limitations such as the impossibility to input three-dimensional ground control points (GCPs). This severely limits the final achievable accuracy because it does not allow to correctly estimate the influence of different ground morphologies on the acquisition geometry. To get around these limitations you can make a "pseudo DEM" and other expedients to complete the whole process obtaining absolute results comparable if not better than those of commercial software.<br>The proposed procedure may not be the fastest but it can be a valid alternative for those who use satellite images as a tool in their research work.</p><p> </p>

scholarly journals Tradition in Whole Number Arithmetic

2018 ◽  
pp. 343-373 ◽  
Author(s):  
Ferdinando Arzarello ◽  
Nadia Azrou ◽  
Maria G. Bartolini Bussi ◽  
Sarah Inés González de Lora Sued ◽  
Xu Hua Sun ◽  
...  
Keyword(s):  
Whole Number ◽  
Whole Number Arithmetic

scholarly journals The effects of learning style and gender consciousness on novices’ learning from playing educational games

2012 ◽  
pp. 63-77
Keyword(s):  
Learning Styles ◽  
Learning Style ◽  
Extrinsic Motivation ◽  
Educational Games ◽  
Eighth Graders ◽  
Game Based Learning ◽  
Gender Consciousness ◽  
And Gender ◽  
Study Participants ◽  
Better Than

This study investigated the effects of novices’ learning style and gender consciousness on learning of programming concepts from game-based learning activities. Four classes of eighth graders with 59 males and 63 females participated in this study. Participants were identified as the diverger group and the converger group based on their stronger learning styles. Game-play activities were implemented to support participants’ learning of programming concepts. The results revealed that (a) for the programming comprehension performance, the convergers outperformed the divergers; (b) participants’ learning style and gender consciousness significantly affected their project performance; (c) for the high gender consciousness learners, the convergers performed better at abstract conceptualization and active experimentation than the divergers did; (d) for the divergers, the low gender consciousness learners possessed lower stereotype and were willing to challenge and performed better than the high gender consciousness learners; and (e) all the participants revealed positive intrinsic and extrinsic motivation.

scholarly journals Performance of a New Magnetic Chitosan Nanoparticle to Remove Arsenic and Its Separation from Water

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Cheng Liu ◽  
Bin Wang ◽  
Yang Deng ◽  
Biao Cui ◽  
Jie Wang ◽  
...  
Keyword(s):  
Freundlich Isotherm ◽  
Magnetic Chitosan ◽  
Whole Process ◽  
Wide Range ◽  
Chitosan Nanoparticle ◽  
Equilibrium Data ◽  
Pseudo Second Order ◽  
Material Separation ◽  
Initial Adsorption ◽  
Better Than

Removal performance of arsenic in water by a novel magnetic chitosan nanoparticle (MCNP) with a diameter of about 10 nm, including adsorption kinetics, adsorption isotherm, main influencing factors, and regeneration effects, was investigated. In addition, the effective separation way for MCNP particles and the new application mode were developed to prompt the application of MCNP. The results showed that MCNP exhibited excellent ability to remove As(V) and As(III) from water in a wide range of initial concentrations, MCNP removed arsenic rapidly with more than 95% of arsenic adsorbed in initial 15 min, and the whole process fitted well to the pseudo-second-order model. The Langmuir model fits the equilibrium data better than the Freundlich isotherm model and the maximum adsorption capacities of As(V) and As(III) were 65.5 mg/g and 60.2 mg/g, respectively. The saturated MCNP could be easily regenerated and kept more than 95% of initial adsorption capacity stable after 10 regeneration cycles. A new magnetic material separation method was established to separate MCNP effectively. The continuous-operation instrument developed based on the MCNP could operate stably and guarantee that the concentration of arsenic meets the guideline limit of arsenic in drinking water regulated by the WHO.

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