The teacher shows the students three games and asks them to find the differences.
All three toys were similar in shape, size and materials.
After careful observation, the student observes the hole in the game.
The first toy has holes in its ears. The second toy has ears and mouth holes.
The third game has only one hole per ear.
Then, using the needle, the student inserts the needle into the ear hole of the first toy.
The needle comes out of the other ear.
In the second match, when the needle was inserted into the ear, the needle came out of the mouth.
And in the third game, when I put the needle in, it didn’t come out.
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