This is:

Shouldn’t you chew for him? For example, my parents told me quite early that knowledge is needed. In particular, on the example of wallpapers: "Yes, we will have you repair to do - here is the plan of the house, here is the length and width of the roll, calculate how much you need."... a fifth-grade brain to squeeze) - well, and the main thing here was to give a tie to reality. And then it just went.

I am a product of Soviet school and similar education.
I am 14 years old. Parents build a house. Buying building materials - the most exciting quests before that. In the weekend, parents are constantly absent, leave at night, come in the evening barely alive from fatigue. My job was to prepare lunch for their arrival. No one is upset about whether I can do it or not – a person is almost an adult, there is a cookbook, food in the refrigerator and in the shops, money in the box. There were no stamps in the house, the capacity of pots and other dishes I had to calculate using geometric formulas. And it was also necessary to make the optimal lunch menu, based on the availability / absence of meat / chicken / fish at home, what vegetables are currently sold in the vegetable store, and whether any deficient products are now sold in the neighboring gastronomy.