Nowadays, current global environmental problems include measures to eliminate or reduce the negative impact of chemicals from petroleum sources and, therefore, the use of materials from natural resources is increasingly recommended. In this context, natural-based superabsorbent polymers derived from polypeptides and polysaccharides have undergone chemical and biochemical modifications to improve their ability to absorb and retain large amounts of liquids. In the present paper, a new process has been used to overcome the side effects of radical polymerization in the manufacture of conventional polyacrylate superabsorbents (SAPs). Tragacanth gum (TG) was selected to prepare a new superabsorbent material (CMTG-GA) based on carboxymethyl tragacanth (CMTG) crosslinked with glutaraldehyde (GA). The characterization of the polymer was carried out by FTIR, TGA, XRD, and SEM. The effect of the amount of crosslinking agent and the pH on the water absorption capacity was also examined. Subsequently, swelling studies were performed using free swelling capacity (FSC) and centrifuge retention capacity (CRC) techniques in distilled water, tap water, and saline solution. The results showed that the CRC of the new material is not less than 42.1 g/g, which was observed for a ratio of 20% by weight of GA to CMTG. Likewise, the maximum absorption results were 43.9 and 32.14 g/g, respectively, for FSC and CRC at pH 8.0. In addition, a comparison of the swelling capacities of the synthesized product with a commercial SAP extracted from a baby diaper, well known in the Moroccan market, showed that the performances were very similar.

We endeavor through this work to demonstrate the effects of the introduction of neuroeducation data in schools and their application, via an experiment of neuropedagogical methods, to respond to the hypothesis that the contribution of neuroeducation may be beneficial for learning. During this study we designed four neuropedagogical methods and to measure their effect on the learning of students in the classroom we used an evaluation grid comprising six psychopedagogical parameters. The results show that no statistically significant variation of these psychoeducational parameters is observed between sexes. However, a variation is recorded for the four neuropedagogical methods between the groups in pre-test and post at the levels of the mean scores ranging from 5.15% to 440%.

The speed of scientific, technological and organizational progress requires more responsiveness, adaptability and anticipation from organizations, in implementing abilities that are more cognitive than technical; in this context, competence comes from the ability of being well informed and constantly trained. In Morocco, Vocational Training (VT), which is deeply rooted in the educational system, has become a means for the development of companies' competitiveness. Thus, any delay in this regard will be correlated with their substandard performance. This work is based on an experiment of rating the services provided by a Vocational Training Institute (VTI) teaching the trades relating to ITC, with a view to developing a strategy to improve the Management by Quality, via a systemic approach, which can be applicable to VT and Higher Education operators.

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Following the suspension of classes in Morocco due to the health crisis related to COVID-19, an adaptation of the pedagogical intervention of teaching is required. Distance learning is an essential lever contributing to ensuring the educational continuity of students. In this sense, our contribution is to ensure the educational continuity of students during the period of containment through the use of a digital manual. The digital textbook is made available to students of the 1st year of the qualifying secondary education. Through a tracking grid, we measured the student engagement during two different periods without and with the use of the digital textbook. The results show that the digital textbook was able to elicit student engagement in the completion of learning activities with a remarkable improvement of 57.1% in student engagement rate over the two periods (t (273) = 11.059, p < 0.001). Student engagement while using a digital textbook can lead to better academic performance (r = 0.743, p = 0.000 < 0.01). No one can deny the importance of distance learning as a powerful tool that allows teachers to improve their professional practices in the presence of solid, quality instruction in the classroom that promotes the acquisition of skills and the development of competencies in students.