2. Paint the model into six faces, namely, up, down, front, back, left and right.

3. Measure the length of line segments on each surface with a ruler or other tools, and record them as A, B and C respectively.

4. Draw six squares or rectangles with the same area as the model on colored paper, and draw six identical figures on colored paper according to the size of up, down, front, back, left and right.

5. Cut these six numbers with scissors. Pay attention to ensure the accuracy when cutting. It is best to use tools such as straightedge and pencil to assist the shearing of scissors.

6. Fold the colored paper, that is, fold and paste the six figures according to the position of the model surface, and finally splice the colored paper into the shape of a cuboid or a cube to complete the surface area paper cutting.