Elisa Counts

The objective is to propose a tool to train to solve operations.
For additions and subtractions, it is possible to set the size of the numbers in the series: from unity to thousands, with or without restraint depending on the level of learning.
For multiplications, it is possible to choose the tables to include in the operations.
It is possible for each series to activate or not a chrono.
A more fun alternative to the notebook to learn!