A system for exercise with math.

KKuentas
Free
Offline
http://www.soldetardor.com/jffa/kkuentas.htm

Do your children of school age have trouble with math? Need an after-school support for your children? To this end we created Kkuentas program, a set of activities and materials to help students enhance their ability to perform basic mathematical operations. Kkuentas incorporates exercises for all years of primary education.