Doubling And Halving

Jan 3, 2016

Release Build 1.0.8
Fixed issue with images not being displayed properly.
Release Build 1.0.5
Graphics are improved a lot, added new levels and settings option to turn off music.
Release Build 1.0.4
Lessons,Practices and Tests for 2 digit doubling, 3 digit doubling, 4 digit doubling, 2 digit Halving, 3 digit Halving Mentally and 4 digit Halving.

Release 1.1.0 add 15 usage examples of doubling and halving