learning by doing

if a student does math assignments in a test 

then that student will get right or wrong on its answers 

so if the student was motivated and studied hard 

then part of that motivation will die 

if the student gets wrong on some of the answers 

or if the student was unmotivated and studied little 

then more of that motivation will die 

if the student gets wrong on many of the answers 

but if the student gets help from the teacher 

to solve math assignments 

then it will matter less if the answer is right or wrong 

because the student will learn from the process 

and the process is solving math assignments 

if one teacher explains math to 30 students 

then that teacher wastes its energy 

so that the teacher will have less energy to help the students 

when the students do math assignments 

instead the students could look at videos explaining math 

on their personal tablets with headphones 

and then the students solve math assignments 

while a few teachers help students that get stuck 

this learning by doing approach is not a new idea 

and has some things in common with how workers learn at a company 

which is new worker is instructed by older worker or boss 

how to do work 

and then new worker gets guidance 

from older worker or boss 

while doing work 

it easily becomes a bad cycle 

that the teachers takes longer and longer time 

to explain math theory to its 30 students 

because the teacher sees that the students understands too little 

to solve math assignments by themselves 

and only one teacher can't help 25 out of 30 students 

that need help to solve math assignments 

more teachers per student 

will enable more students to get help 

so that fewer students get stuck 

but it will cost more for the government to pay for more teachers  

but if more students succeed in studies 

then that will benefit companies that get more competent workers 

so that those companies earn more money 

and the government gets more tax money