The Conundrum of the Crooked Crayon: Solving Mysteries Through Science, Technology, Engineering, Art & Math (Paperback) (ISBN-13: 9781634409346)

While doing spring cleaning in her room, Jesse comes across a crayon on her window sill that is curiously bent over. She recalls that the crayon was there all winter and not bent at all. Jesse begins to wonder what caused the crayon to bend. Using science skills, Jesse discovers how the Sun is closest to Earth in summer and that's why the crayon melted.