About Calculation Triangle
This virtual manipulative encourage the development of flexible arithmetic thinking. Watch a video of the app: http://www.youtube.com/watch?v=iN3b20F6UC8 A calculation triangle is splited into three fields. Each field can
This virtual manipulative encourage the development of flexible arithmetic thinking.
Watch a video of the app: http://www.youtube.com/watch?v=iN3b20F6UC8
A calculation triangle is splited into three fields. Each field can contain tokens. On each edge the sum of the two corresponding fields is written.
And this is how it works:
Touch with you fingers on a field to produce tokens and move them from one field to another.
Move tokens out of the triangle to delete them.
Close the shutter to hide a field.
If you swipe over a number you can hide it or show it again.
Shake the calculation triangle to emty it.
This virtual manipulative does not include tasks. But you can use this app to create puzzle problems for a learning partner or to model and solve existing tasks. Here are some exemples for good tasks to effectively work with this app:
Find the missing numbers?
Figure out how many tokens are on the hidden field?
How do the numbers change, if you ...
... add/remove one (two, three, ...) token to each field?
... move one (two, three, ...) token from one field to another?
... add one token to two of the three fields?
...
Is it possible to have three odd numbers? Why (not)?
Is there a relationship between the sum of the numbers and the total quanitiy of tokens on the fields?
Is it possible to produce any numbers or are there restrictions?
Jun 9, 2017
Version 1.3
This app has been updated by Apple to display the Apple Watch app icon.
Ready for iOS 11 (64 Bit) + Bug fixes!
Previous Versions
Here you can find the changelog of Calculation Triangle since it was posted on our website on 2016-10-19 00:49:16.
The latest version is 1.3 and it was updated on 2024-04-27 11:31:36. See below the changes in each version.
Calculation Triangle version 1.3
Updated At: 2017-06-09
Changes: Jun 9, 2017 Version 1.3
Ready for iOS 11 (64 Bit) + Bug fixes!
Calculation Triangle version 1.3
Updated At: 2017-06-09
Changes: Jun 9, 2017
Version 1.3
This app has been updated by Apple to display the Apple Watch app icon.
Ready for iOS 11 (64 Bit) + Bug fixes!
Calculation Triangle version 1.2
Updated At: 2012-11-09
Calculation Triangle version 1.3
Updated At: 1970-01-01
Changes: 2017年6月9日 Version 1.3
Ready for iOS 11 (64 Bit) + Bug fixes!
Disclaimer
Official App Store Link
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