The Clue in the Painted Pattern — Ken Bowser

While on a camping trip, Jesse finds a curious piece of stone with an interesting pattern on it. With research and the help of Professor Peach, she learns that it's a piece of broken pottery with a pattern unique to a certain Native American tribe. After an archaeological dig with the Professor and her friends she finds more pieces of the ancient artifact. Using her art skills, Jesse is able to preserve the clay pot.