Through a series of letters exchanged between Emily and her teacher, Mr. Blueberry, Emily learns about whales and Mr. Blueberry learns about imagination and faith. Lesson Idea: The pictures in the story show Emily's story, but we never see Mr. Blueberry. Read aloud the story. Ask your students to close their eyes and imagine what they think Mr. Blueberry looks like. Have them draw a picture of Mr. Blueberry. Share the pictures and discuss how each person has individual mental images and activating these mental images as we read helps us to comprehend text.