Tony was tired of watching his goldfish. It was raining outside. There was nothing to do. He went down the hall. He went into his big brother's room. Alan looked busy.
"What are you doing, Alan?" he asked.
Alan looked up. "I'm drawing a map," he said. "Would you like to watch me?"
"Sure!" Tony said. He climbed up on a chair beside Alan. The paper was covered with red and blue lines.
"Are those roads?" he asked.
"Sort of," Alan said. "They are like roads. They go from one place to another place."
"Where do they go?" Tony asked.
"These roads go from your heart to your toes," Alan said. "Other roads go to your nose, your hands, and your knees. They go all over your body."