Abacusshapes

Representations of paths in two ways route and tree

Current status. Android above 5: this app works properly Android below 4.0: this app won’t work iPad mini2: this app works properly iPhone 4s: Slow Please consider the function of adding external PNG images as experimental. There are still bugs that the PNG images persists to stay on Screen and never be refreshed. I tried to fix this bug and waisted several days in vain. I wondered whether it’s really worth spending time in fixing this problem or not.

Easy to understand Intuitive illustration Addictive self motivated learning Realization of great possibility of Edtech Preparation for higher education Scaffold for unexplored field Integrated legacy of wisdom of humanity Multilingual speech synthesis Equality of educational opportunity for children Useful time killer