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Technological changes have been associated with the evolution of computer and telecommunications systems. These changes have resulted in a rethinking of teaching and learning methods in the new digitalized environment at all educational levels. This rethinking motivates some teachers to design new digital tools that support students in their learning process, offering them an easier and more entertaining way to obtain knowledge. The digital learning tools are software and informatics programs that make everyday activities easier for students. We have designed four digital learning tools for the learning of inferential statistics that allow college students to perform hypothesis tests for: <em>i</em>) the arithmetic mean of the population, <em>ii</em>) the proportion of a population, <em>iii</em>) the difference between two arithmetic means, and <em>iv</em>) the difference between two proportions. These digital learning tools are products from the project “Statistics-to-Go” that is being developed at the University of Sonora. This project is now in its fourth stage.

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A quantum system of two ions, of equal or different electrical charge, is studied under the action of a harmonic potential and confined by an impenetrable spherical box. The energy spectrum and the corresponding wave functions are obtained. These wave functions are rendered using Volume Ray Casting in order to obtain a visual image of the effect of the Coulombian potential, the harmonic oscillator, the centrifugal potential, and the confining box.