What's New

* iPad Retina support
* performance improvements
* ui tweaks and bug fixes (thanks for all the user emails)

App Description

You can check the free online-version of the twenty frame at www.lernsoftware-mathematik.de/prototypen/zwanzigerfeld.html before

The learning tool provides a virtual math manipulative for exploring and understanding basic math operations (addition, subtraction). You can manipulate the virtual double-sided counts in a five-structured twenty frame and observe the effects to the addition or subtraction term. Over the observation and manipulation of multiple representations the child gets a (deeper) unterstanding of the basic math operations. This helps especially children with dyscalculie..

To see how to use the twenty frame and all it's possibilities, watch the video at: http://www.youtube.com/watch?v=mWAxGLGoVDo.

The virtual tool doesn't provide tasks, but it can be used to solve and visualize school or homework tasks.

App Screen Shots

(click to enlarge)

App Changes

January 04, 2013 New version 1.2
September 11, 2012 New version 1.1
September 03, 2012 Initial Release

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