Arithmetics practice app for my son in Vue.js

I wanted to make some interactive pages recently to incite my son to learn arithmetics and also to learn something new and cool for myself. I decided to use Vue.js and am now happy that I did. Below is the link to my application, I hope you will enjoy it:

Arithmetics practice link

The source code of the application can be found on GitHub.

My first program in javascript...

Recently we studied the wet bulb temperature concept (wet bulb temperature for isobaric and adiabatic process). And in order to calculate it I created a simple javascript program. This is actually my first programm in javascript. The method is a simple Newton's method (http://en.wikipedia.org/wiki/Newton%27s_method). Check it out, if you are interested http://people.sca.uqam.ca/~huziy/WetBulbTemperature/main.html.