final
prueba 2
add str property to Equation class
remove console.log
move equation_str as init parameter to the Equation class
Passing solution for equation
Evaluation method check for solution
Move collection to collection factory
Add missing semicolon
Ensure Integer for equation evaluate
Collection model
Add ten equations in collection
Refactor
Change some equations
Add 10 more equations
Get 10 randomized equations for collection
Score model
Get score button
Move score.js to game.js
Move score logic to game model