2. An object composed of cubes-Rubik's Cube

3. Know the second, third and fourth order Rubik's Cube.

4. What happens if the surface is painted?

(No coating, one-sided coating, double-sided coating and three-sided coating)

5. What are the differences? What should I do?

Health: number; Study the law; Study small cubes.

Teacher: First, turn the study of complex things into the study of simple things, and simplify the complex things.

6. Team work to explore "location"

Give birth to a narrative position, and the teacher will add it.

7. Group cooperation to explore the "number of blocks"

8. Report, explore methods and summarize laws.