You can try the following methods to verify:

1, drawing method.

Draw a picture and a cube on a piece of white paper.

This is a bit of a test of painting ability. If the painting is not good, it will be a bit difficult to identify.

2. origami.

Prepare some square pieces of paper by yourself, and then fold the paper into cubes. This is the best identification.

But the process is a bit complicated and time-consuming.

If you have a good imagination, you can try to verify it with imagination.

Imagine folding the cube step by step in your mind, and then look at the number opposite to 3.

take for example

As shown in the figure:

This 3 is the opposite of 5.

This 3 is a 4.

From this, we can get:

The number of opposite sides of the square 3 depends on the order of the marks.

Extended data:

Method of folding cube:

1 First, prepare a number of square colored papers, each side should be straight and aligned, and it can't be crooked, which will affect the appearance.

2. Secondly, fold the two sides of the square origami in half and open it.

3. Then fold in half around the middle horizontal line.

4. Then fold up and down against the middle horizontal line.

5. After completing the above steps, you can get a face of the cube.

6. Finally, repeat the above steps to obtain six faces, and then assemble them.

The Rubik's cube is out!

Baidu Experience-How to Fold Cubes