My Number Line

My Number Line is a simplistic application you can use to teach math to children. It takes an interactive approach to help kids understand equations that add up to 100.

Requires .NET Framework to work

Setting up this tool takes little time. However, it's necessary to have .NET Framework installed or it won't work. Newer Windows versions have this software framework built in, so you just have to activate it.
If you don't have it, through, the application offers to download and install it on your behalf, so you don't have to waste time looking it up on the web.

Calculate sums up until 100

When it comes to the interface, My Number Line adopts a single window that shows all numbers 0 through 100 displayed in a horizontal bar, which you can navigate by clicking and dragging the slider or by using your mouse wheel.
How it works: the number of the slider's current position that you set represents the first number in the addition. For the second number, you have to click the + sign. Starting from 1, the second number can be incremented to obtain any sum until the sum becomes 100.

Has some display issues

This means that My Number Line cannot deliver sums over 100. Unfortunately, we've noticed some functionality issues in our tests. It's not possible to increase the window size to get a better view of the 0-100 grid, and the visible grid is shown up until 52.
To set the slider to a position greater than 52 (first number of the addition), you have to click and drag it out of the window while keeping an eye on the counter to figure out when you can release the mouse button. It's not possible to move the slider and release the mouse button to move the horizontal bar to be able to move the slider again, because it resets its position.

Poorly implemented app for learning additions

Furthermore, it's not easy to specify the second number of the addition by just writing it down. For example, if you want to set it to 50, you have to click the + sign fifty times.
All things considered, My Number Line is a rather poorly implemented calculator for learning additions.