A number of researchers have documented several difficulties faced by learners of basic programming concepts. Among the suggested pedagogical solutions to overcome these difficulties is the use of serious games inthe learning process. In fact, these games are more likely to boost the motivation of students and allow them to develop their knowledge efficiently. Our study focuses on evaluating such usage and the resulting students' motivation towards programming. We've made students create simple games using the Scratch game environment in order for them to learn programming basics. The experiment was conducted with a group of 69 high school science major students. This group of students was arbitrarily chosen and divided into three sub-groups. With the first sub-group we experimented with our pedagogical method based on the creation of simple games using Scratch environment. With the other sub-groups we used a conventional method based on Pascal programming language. Two surveys were distributed at the beginning and at the end of the experimentation in order to identify the programming level of students, their gaming habits, their motivation and interest for programming in the future. The analysis of the surveys shows that using an environment for learning programming such as Scratch highly motivate students and empower them to pursue their studies in programming. In fact, when learners were asked about their desire to continue their studies in programming, 65% of students who have experienced with Scratch environment consider continuing their studies in programming whereas only 10.3% of students who used a standard programming environment showed some interest.

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Phenyltetrazole substituted compounds, namely 5-phenyl-1H-tetrazole (PT), 5-(4chlorophenyl)-1H-tetrazole (Cl-PT), 5-(4-methoxyphenyl)-1H-tetrazole (MO-PT) and 5-p-tolyl-1H-tetrazole (M-PT) were synthesized to study their inhibition behavior on mild steel in 1 M HCl by weight loss measurement, potentiodynamic polarization studies and electrochemical impedance spectroscopy (EIS). It has been observed that corrosion rate decreases and inhibition efficiency increases with increasing in phenyltetrazole substituted concentration and dependence on molecular structure. Polarization data indicate that these compounds act as very good cathodic inhibitors of mild steel in 1 M HCl. The result showed that the inhibition efficiency decreased with temperature and increased with immersion time. EIS has the same trend of inhibitive effect as that of the polarization data, which indicates the formation of a protective layer on mild steel surface by molecules adsorption.

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