Calculation Triangle
Education
1,99 € · Designed for iPad
Also Included In
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?
Ratings & Reviews
This app has not received enough ratings or reviews to display an overview.
This app has been updated by Apple to display the Apple Watch app icon.
Ready for iOS 11 (64 Bit) + Bug fixes!
The developer, Christian Urff, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy .
No Details Provided
The developer will be required to provide privacy details when they submit their next app update.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 23.6 MB
- Category
- Education
- Compatibility
Requires iOS 6.0 or later.
- iPhone
Requires iOS 6.0 or later. - iPad
Requires iPadOS 6.0 or later. - iPod touch
Requires iOS 6.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- Languages
English and 15 more
- English, Czech, Dutch, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, Turkish
- Age Rating
4+
- 4+
- Provider
Christian Urff
- Christian Urff has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- Address
Elsa-Hammer-Weg 44
88048 Friedrichshafen
Germany - Phone Number
+49 15678560940 - Email
kontakt@urff.app
- Copyright
- © Christian Urff
