 You can help a child learn about the sun heating the earth by feeling it themselves. You can have the child stand in the sunlight and feel how their skin gets warm. Then they can stand in the shade and feel how it is cooler. You can talk with the child about how the sun gives heat to the earth. You can explain. That's why when the sun shines during the day, it is warmer. And when the sun is down at night, it is cooler. Doing this will help them understand how the sun affects the world around them.