Preparation materials: drawing paper, black paintbrush, watercolor pen.

Step 1. First draw a circle, draw a semicircle from the middle, and draw a round body downwards, as shown in the picture below.

Step 2. Then draw the spout on the left side of the pot body. When drawing, pay attention to the width at the bottom and the thinness at the top. Then draw two circles on the bottom of the lid, symmetrical on both sides, as shown in the picture below.

Step 3. Then draw the handle, paying attention to the symmetry on both sides when drawing, so that the prototype of a kettle is drawn, as shown in the picture below.

Step 4. Finally, use watercolor pens to color the prototype of the kettle. Paint the lid and handle yellow, and the body blue. A simple sketch of the kettle is drawn. As shown below.

Knowledge expansion: The kettle, also known as a thermos or thermos, was invented by the English scientist Dewar. The vacuum compartment is coated with a layer of silver or reflective paint to block the heat radiation. Then use a stopper to block the mouth of the bottle, so that all three methods of heat conduction are cut off, and the inner container of the bottle can maintain the temperature for a longer period of time.