New class activity

The smile of knowledge

Hello everybody,

In order to assist current KembloX users, future KembloX users, and potential KembloX users, a new page has been created on the site. The page is entitled “CLASS ACTIVITIES” and it will comprise models of activities related to the use of the KembloX™ system in the classroom and/or in the laboratory. The models can be tailored by educators according to their needs and preferences.

For starters, a first class activity was published, to be followed by other class activities. This first class activity is simply entitled “Ionic Compounds Modeling with the KembloX™ System” and can be used in connection with the following topics:

-Definition of Anions and Cations

– Naming ions, both monatomic and polyatomic

-Formula Unit (aka Empirical Formula)

-Naming of ionic compounds, including Stock notation.

We hope that you will include this class activity into your syllabi, as KembloX™ proved to be an effective educational tool.

As always, KembloX appreciates feedback, ideas, and suggestions for improvement.

With best wishes for success,

Dr. Benedict Aurian-Blajeni

The “KembloX effect” submitted to the IUPAC 2019 Congress

The KembloX™ educational system ( is used to illustrate chemical terms and concepts such as: ionic charge and formation of ionic compounds, Stock notation, nomenclature of ionic compounds, dissociation in solution, metathesis reactions with precipitate formation, full ionic equation, net ionic equation, spectator ions, limiting reactant, and excess reactant. From a didactic perspective, KembloX™ addresses two of the main learning styles: visual and kinesthetic (tactile), by using complementary blocks and color coded interrelated objects.  The system comprises three parts: a set of color-coded, complementary blocks that can be assembled according to chemical principles, a chart of most common monatomic and polyatomic ions, and a four-sided spinning top used for educational purposes; the same color code is used for all items.

In this communication we present preliminary results on the “KembloX effect”.  We calculated the grade improvement for a quiz related to the ionic compounds’ formula unit. Based on a paired t-test, the results indicate that, with 95% confidence, the improvement in grades is in the interval 6 – 15 points (on a 0-100 scale).