The student did not know basic mathematical steps such as adding or subtracting fractions. I didn't want to send him to sit down, so I tried to analyze and explain everything in detail. It took me a long time because I wasn't ready to explain all the basic mathematical adjustments. Pupils in the benches worked with the calculation of this example. No one was bored in class, no one objected, they worked properly.
It took me a long time because I wasn't ready to explain all the basic mathematical adjustments.