Materials required: cartons, cardboard, markers, double-sided tape, scissors, meat cleaver.

1. Draw or paste the pattern of the big tree on the carton.

2. Cut six round holes under the big tree with a meat cleaver.

3. Draw round holes with red, orange, yellow, green, blue and purple watercolor pens.

4. Stick some double-sided tape on the ceiling.

5. Touch the colorful fur balls to the crown of the tree.

6. Guide the baby to take down the fur ball and put it in the hole of the corresponding color.