This app provides a pictorial representation of the periodic table of the elements.

Click on each of the elements to see details of that element. Click on Показать Категорий to see the listing of the element groups.

Track, calculate, and predict your grades in this robust grade tracker! Free!

A simple and easy to use app which solves your Quadratic Equations for you!

Lumos StepUp provides Math and ELA practice for Smarter Balanced & PARCC tests.

Lumos StepUp provides Math and ELA practice for Smarter Balanced & PARCC tests.

Lumos StepUp provides Math and ELA practice for Smarter Balanced & PARCC tests.

Names and Formulas. If you are studying General Chemistry this app is for you. It can help you review the names and formulas of the most common chemical compounds. You can train yourself in 7 compound families taken largely from Inorganic Chemistry and in 140 formulas distributed in groups of 20 and randomly chosen without repeating those already displayed.

In '10 minutes with quadratic equations' users can work with this type of equations.
If you work the ten diary minutes, you gradually notice how you will improve in maths.