Education Maths Time Table

I hope i post this in the right section. i am new to unity ( about 2 months)
I fixed a text on the board , but see this wont work.
I don't know what direction to go , i am aiming for the math-tables (1X1 to 12X12) "left button and space to shoot the right answer, the next table must appear, to shoot wrong answer ( right button or left shift ) will illuminate the answer. you will eventually run against a clock with penalties.
Example uploaded:

https://play.unity.com/mg/other/webgl-builds-235559

Any suggestions or tips ( layers for questions or topics to learn ), i am stuck on how to optimise the mathtables questions against their answers and to categories them if they only ask for one tipe ( 2X ect) or combination 1-5X tables.
Please give ideas, i just dont know what to learn for this to happen.
Thank you