Semen Moine on Teletype

How is crushed stone mined?

Crushed stone is mined in quarries with stone.

To mine a ton of sand you need a construction tool. This tool is called an excavator.

If a kilogram is not equal to a liter, then how to check it?

Everyone knows that a liter and a pound are not the same thing.

How to understand that a liter and a kilogram are different things?

How many pounds or liters is one plate?

The theory of steps is necessary for correct upright posture.

The difference between the new physics and the old physics is in the principles of the approach to teaching.

How to apply theory in practice is the task of every person.

How do I add two numbers? How to multiply two numbers?