Papers by Moustapha Diack
The need for high quality experimental research on the effectiveness of multimedia learning in K-... more The need for high quality experimental research on the effectiveness of multimedia learning in K-12 schools is immense when considering the need to provide the best education for each child. However, there is little evidence-based research available to guide education leaders' decisions relating to technology initiatives. Therefore, the purpose of this study was to determine the effectiveness of a multimedia tutorial system on the computer self-efficacy and mathematics students' learning outcomes. This research assessed the role of learning styles in students' learning outcomes. The researcher implemented a quasi-experimental mixed methodology design that included quantitative and qualitative approach to increase validity. The research study involved a sample of sixty eighth grade students from two different public middle schools comprised of fifty percent male and fifty percent females. The multimedia group consisted of twenty-nine students and the traditional group consisted of thirty-one students. The study included data collected from a pre-test and post-test unit assessment, computer self-efficacy survey, learning style inventory, and student and teacher interview questionnaires. The research findings indicated learning outcomes achieved by students in the multimedia learning environment were statistically significant greater than the traditional face-to-face learning environment. The study revealed computer self-efficacy was more significant in the learning outcomes of the multimedia learning group, and learning style plays a significant role within the experimental group. Students and teachers made many positive comments about the benefits of the multimedia learning environment. This study was important to teachers and administrators who are investigating ways to incorporate technology into the classroom.
Proquest Llc, 2011
The central purpose of this research was to assess student learning outcomes in the Algebra I cre... more The central purpose of this research was to assess student learning outcomes in the Algebra I credit recovery course offered at traditional schools in Louisiana and the Algebra I credit recovery course offered online by the Louisiana Virtual School (LVS). It was also conducted to assess the associations of gender, grade level, and socio-economic status on learning outcomes measured as final grade in the course. The researcher utilized the Statistical Package for Social Sciences to analyze the data. Descriptive statistics were used to describe the demographic features of the data. Frequencies of the variables in each group were examined and a crosstab analysis was also utilized. The Pearson's Correlation Coefficient as well as a factorial ANOVA was utilized to determine and examine the relationship between the independent and the dependent variables. On the basis of the findings, it was concluded that the participants who took the course in a traditional school setting had higher means of the final grades than participants who took the course at LVS. A review of the literature and the findings of this study revealed a need for further research in several areas.
Le développement des procédés d'hydroliquéfaction dans la perspective d'une valorisation ... more Le développement des procédés d'hydroliquéfaction dans la perspective d'une valorisation à plus ou moins long terme est lié à la mise au point de catalyseurs performants assurant l'obtention de produits de qualité, à moindre coût d'investissement technologique. Il se pose donc le problème de l'évaluation de leur activité. Notre objectif a donc été la mise au point de méthodes analytiques, permettant de sélectionner un certain nombre de critères d'évaluation de l'activité catalytique en hydroliquéfaction. Cinq critères mettant en jeu un certain nombre de protocoles analytiques ont été considérés. Critère no 1: bilans pondéraux (extrographie-sonication). Ils donnent les bilans de conversion globaux et une distribution en familles des composés en fonction de leur solubilité dans les solvants considérés. Critère no 2: identification structurale et distribution en classes de composés en fonction des zones d'indexe (chromatographie en phase gazeuse sur colo...
Although the use of Podcasting and Vodcasting as instructional technology is in its infancy as a ... more Although the use of Podcasting and Vodcasting as instructional technology is in its infancy as a research area, it has, to date, generated a lot of interest and discussion among researchers in the field of educational technology. Indeed, the pedagogy and andragogy that guide their successful implementation in the classroom and the learner perception of the technology is still not well documented. This research intends to contribute in this area and to lay the ground work for future research collaborations in this growing research field. The purpose of this exploratory study is to develop and pilot-test two qualitative research instruments to measure student and faculty attitudes towards the integration of podcasting and vodcasting technology to support teaching and learning in the classroom. The research will also seek to document faculty perception of the utility of the technology for classroom instruction and the emerging best practices that guide pedagogical implementation.
The Journal of Computers in Mathematics and Science Teaching, 2019
Le developpement des procedes d'hydroliquefaction dans la perspective d'une valorisation ... more Le developpement des procedes d'hydroliquefaction dans la perspective d'une valorisation a plus ou moins long terme est lie a la mise au point de catalyseurs performants assurant l'obtention de produits de qualite, a moindre cout d'investissement technologique. Il se pose donc le probleme de l'evaluation de leur activite. Notre objectif a donc ete la mise au point de methodes analytiques, permettant de selectionner un certain nombre de criteres d'evaluation de l'activite catalytique en hydroliquefaction. Cinq criteres mettant en jeu un certain nombre de protocoles analytiques ont ete consideres. Critere no 1: bilans ponderaux (extrographie-sonication). Ils donnent les bilans de conversion globaux et une distribution en familles des composes en fonction de leur solubilite dans les solvants consideres. Critere no 2: identification structurale et distribution en classes de composes en fonction des zones d'indexe (chromatographie en phase gazeuse sur colo...
International Journal of Learning, Teaching and Educational Research, 2017
This study aimed to determine the effect of Differentiated Instruction (DI) on learning outcomes ... more This study aimed to determine the effect of Differentiated Instruction (DI) on learning outcomes of high school science students using a convergent, parallel, mixed method research. The qualitative component of the research was a phenomenological approach which explored individual beliefs, experiences and perceptions of teachers about DI. The quantitative part involved a comparison in the End-of-Course (EOC) performance of biology students exposed to DI versus those not exposed to DI. Personal interviews with six science teachers and survey results from 65 biology students revealed that teachers and students alike have positive perceptions of DI. The teachers perceived DI as an effective instructional method for improving student engagement and academic performance. More students scored Good/Excellent in the DI group (76.9%) compared with the Non-DI group (67.6%). However, analysis of covariance (ANCOVA) suggests that at 5% level, the DI group did not perform significantly higher th...
When a strong base anion exchange resin, such as a chlo ride-form strong base anion exchange resi... more When a strong base anion exchange resin, such as a chlo ride-form strong base anion exchange resin, is conditioned with a low concentration of hydroxyl (for example, an NaOH solution with a concentration between 1 and 10 mM), the conditioned resin separates in, sit, Is from sugars and sugar alcohols, while still allowing ready desorption of the sugars from the resin. The feedstock is first passed over a column containing this conditioned resin, followed by a mobile phase solvent, preferably water. The inositols have a lower affinity for the treated resin than do the sugars and sugar alcohols in the feedstock, and therefore pass through the column more quickly. The process may economically be performed on industrial-scale inositol separations, particu larly when used in a preferred simulated moving bed chro matographic system.
Page 1. Use of Microcomputer-Based Laboratory Experiments to Integrate Multiple Representations o... more Page 1. Use of Microcomputer-Based Laboratory Experiments to Integrate Multiple Representations of Scientific Phenomena Jerry P. Suits Department of Chemistry and Biochemistry, University of Northern Colorado, Greeley, CO 80634 USA [email protected] ...
J Amer Oil Chem Soc, 1994
Anal Chem, 1992
... Two samples of homemade soot generated in this new instrument were extracted, one of them usi... more ... Two samples of homemade soot generated in this new instrument were extracted, one of them using two different techniques (samples 1-3). A more recent sample was received from TFC (sample 4). Finally, a soot sample (sample 5) was ... 25) Taylor, R.; Hare, JP; Abdul-Sada, AK ...
International Journal of Learning, Teaching and Educational Research, 2017
This study aimed to determine the effect of Differentiated Instruction (DI) on learning outcomes ... more This study aimed to determine the effect of Differentiated Instruction (DI) on learning outcomes of high school science students using a convergent, parallel, mixed method research. The qualitative component of the research was a phenomenological approach which explored individual beliefs, experiences and perceptions of teachers about DI. The quantitative part involved a comparison in the End-of-Course (EOC) performance of biology students exposed to DI versus those not exposed to DI. Personal interviews with six science teachers and survey results from 65 biology students revealed that teachers and students alike have positive perceptions of DI. The teachers perceived DI as an effective instructional method for improving student engagement and academic performance. More students scored Good/Excellent in the DI group (76.9%) compared with the Non-DI group (67.6%). However, analysis of covariance (ANCOVA) suggests that at 5% level, the DI group did not perform significantly higher than the non-DI group (p=.12). This implies that there is no significant effect of DI on student learning outcomes measured by EOC. Although the quantitative result of the study did not show a significantly higher EOC score in the DI group, differentiated instruction positively impacted the learning process by increasing student engagement in class.
Anal Chem, 1991
The adsorption isotherm of phenyldodecane from acetonitrile soiutlons onto porous carbon has been... more The adsorption isotherm of phenyldodecane from acetonitrile soiutlons onto porous carbon has been measured at 50 O C , by frontal analysis. Thb kott" exhibits two Mlexbn points.
This paper describes the theoretical basis for a constructivist design which can help students de... more This paper describes the theoretical basis for a constructivist design which can help students develop a set of mental models that increasingly correspond to scientific models that explain or predict scientific phenomena. These student-constructed models can be linked to form perceptual-to-conceptual bridges via two complementary instructional pathways: (1) interactive multimedia simulations can enhance the student decision-making process in a learning environment by providing guidance through trailand-error experiences that culminate in productive experimental outcomes; and (2) student-generated modeling software can allow visualization of a simple mechanism, which is shown as perceptual icons which can be combined in a meaningful manner that shows conceptual entities and their interactions. The design of both types of software can support scaffolded student understanding of the connection between a scientific phenomenon (studied in the laboratory) and its underlying scientific principle (studied in lecture).
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Papers by Moustapha Diack