CorrectWriting Auto-feedback question implementation

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Goal

This question type goal was to simplify report of student mistakes in a shortanswer question, when student is learning programming language or in simple cases of natural language learning, when student must write correct expression, and we should give him information about skipping some words or placing words in incorrect order. This also could be useful, when we don't give actual information about what words (or some kinds of symbols) was moved or absent in answer, but their meaning, thus forcing student to know what does this part of symbol means.

Examples

Please, consider the following tasks.

Function header in C language

Student must write simple function header for function, that is described naturally: void function(int abc, char def), with following descriptions of parts:

void

type of returned value

function

function name

(

bracket (or opening bracket for function arguments)

int

first argument type

abc

first argument name

,

argument list separator

char

second argument type

def

second argument name

)

bracket (or closing bracket for function arguments)

English language sentence:

Student must write simple sentence, while learning foreign language: The cat ate the mouse, with following descriptions of parts

The

definite article

cat

subject

ate

verb

the

definite article

mouse

complement

.

sentence ending point