Basic arithmetic: add, subtract, multiply, divide
and combinations like 3 x 4 + 8 =
Answers are given by touching the right number on the screen, which is an ongoing practice in the awareness that numbers, quantity and positions correlate.
The app is best on 6” devices and up.
On the screen appear the numbers 1-20 or 1-40.
The player is invited to choose a speed and a type of sum and then it all starts.
Good answers are rewarded and part of a picture is shown.
The pictures have a cultural content. After completing the picture, some information is given in Dutch and English.
The buttons of the interface can hold text in six languages: Dutch, English, French, German, Russian and Frisian.
Playing in the Game-mode can give up to 5 cards at a time if you answer the sums really fast.
This free version is meant as an invitation to all users to give comment and suggest improvements.
Any suggestions? Mail me: [email protected]
More info: www.tjittedijkstra.nl
40Square is updated to Android 9
Some more cultural pictures are added.