Numbers Add and Subtract

This application is designed for users to learn numbers, learn to add and subtract. The application provides the support to understand the basic operations.
This application is designed to be an introduction to basic math.

In the area of ​​numbers the user will be able to learn the numbers from 1 to 9 and will be able to put into practice what they have learned:

In the learning area you will be able to press the count box and listen to the number represented in the images, which corresponds to the number of the box.
In the practice area, the audio corresponding to the number of bears on the screen will be heard, the user must select the corresponding number at the bottom.
Pressing the correct number will automatically enter a new number.

In the addition section it is possible to select the level of difficulty, the user can learn with children's drawings in the easy level and with numbers in the medium and difficult level:

The highest addend will automatically be added to the tally box.
To add you must press the sign plus the number represented in the lower addend.
To send the result, you must press the box that takes the count.
If the result is correct, the sound of celebration will be heard.
If there is an error, an error image will be sent in the result and the error sound will be heard.

In the subtraction section it is possible to select the level of difficulty, the user can learn with children's drawings at the easy level and with numbers at the medium and difficult level:

Automatically the minuend (Top number) will be added in the counting box.
To subtract you must press the minus sign the number of times represented in the subtrahend.
To send the result, you must press the box that takes the count.
If the result is correct, the sound of celebration will be heard.
If there is an error, an error image will be sent in the result and the error sound will be heard.