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The 1×1 Trainer is simple to use and has all training modes needed for primary school. The app trains calculations systematically and is kept simple to keep up the concentration on the results.
You can show your kid that it is getting better and better by checking the average times your kid needs for the calculations.
Start with the settings page to define the need operations.
Your kids will get a trophy for every 50 correct calculations.
Simple motivations are the best.
The app is used widely by parents and schools. It got top ranks for learning apps (age 9-11) in Germany.