1 First, we draw a trash can, which is wide at the top and narrow at the bottom. Draw wheels on both sides of the bottom, and then draw another trash can next to it. 2 Usually our classified trash cans come in four colors, so we have to draw two more same trash cans.

3 The four trash cans have different classifications. We draw recyclable signs, kitchen waste signs, hazardous waste signs, and other garbage signs on the trash cans.

4. After the trash cans are painted, we can start coloring them. First, paint the kitchen waste trash can on the left green, the wheels black, and the recyclable trash can blue.

5. Now paint other trash cans yellow and the harmful trash cans red. The simple drawing of classified trash cans is completed.