## Level 1: Grade

Compare the correct answer to the student answer using our mathematical engine
Isolate the variable $y$ in $y-x=2$:

Correct answer

Student answer

Calculate the sum $\frac{1}{4}+\frac{1}{4}$:

Correct answer

Student answer

## Level 2: Rules

Ask additional properties of the student answer
Simplify the fraction $\frac{2}{4}$:

Correct answer

Student answer

Calculate the sum $30\mathrm{cm}+500\mathrm{mm}$:

Correct answer

Student answer

## Level 3: Random values

Make questions with random values
Add two random fractions:

Correct answer

Student answer

Interpret this bar chart:

## Embedded answers

Embed the answer fields inside of the question text
Given the following function, fill the table below: