Today, few schools can find a standard wooden blackboard.

Conventional blackboards have been replaced by electronic boards or boards on which you have to write not with chalk, but with a special marker. Very comfortable and modern.

In one of the schools, some kind of repair work was being done and of course, the boards were replaced. For that, it was necessary to remove the old ones.

The workers saw a very funny picture. Behind the old boards, they discovered more boards. They have remained

as they were: complete, safe, with formulas, lessons, bright pictures. Time has saved it and nothing is lost.

As it turned out, the previous repair was done a long time ago and the new boards were hung over the old ones.

How many things time has changed, including the multiplication wheel, which is not known to everyone today. It has been forgotten.

The most amazing thing is that the pictures were of such clarity as if they had just been painted. A text was written on one of the blackboards. The handwriting was just flawless.

Recordings of math, music and history lessons were also found.

If the school boards in the villages have not yet exhausted themselves completely, then perhaps it is worth expecting such discoveries.

Just imagine, this is how our history is made. It is quite possible that time will come and genius thoughts and ideas will be discovered on such boards.