An infotoon on the heights of clouds. Here’s a relative chart that can help approximate what kinds of clouds those are and roughly how high in the sky they are. Click the image for a larger, classroom friendly version.
Weather - water cycle liter soda bottle cut in half. Put about an inch and a half of warm water (w blue food coloring) in the bottom. Invert the top of the bottle with the lid on and fill with ice. Watch the water condensate and watch it "rain")