Abacus is a wonderful mathematical instrument used for calculation. This app will help your children learn about Abacus, Numbers, Counting, Addition, …
The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool that was in use centuries before the adoption of the writte …
Amadeus APP is as the remote control and internet connected Amadeus’ audio devices which allows navigation between the many functions.The remote contr …
