  This paper describes the design, implementation and testing of
"Danse-doigts", an edutainment therapeutic application for hemiplegic children.
The objective of this program is twofold. Firstly, to allow them to train their
fine motor skills on tablet. Secondly, to study the effect of this training on
their numerical performance (counting, calculation...). The target population
and the objective of evaluating numerical skills influenced the design. The
software was developed using standard web technologies but is based on a new
parallel programming library written in JavaScript. Applications and libraries
are free of charge and easy to install on most tablets.
