The Great Treehouse Engineering Adventure is a story about Pepper Mint. Pepper Mint is a curious, skilful and creative young engineer. You can read her story and experiment alongside her. This is a STEM Kit which has 9 projects inside which tackle concepts of building, electrical conduction, gravity and motion. The story starts with Pepper Mint visiting her aunt who is a scientist researching primates. She lives in a treehouse in the rainforest. Pepper Mint helps her by devising mechanical and electrical inventions to accomplish various tasks. You can help Pepper Mint to equip the treehouse with pulleys, gears and circuits and learn great lessons in physics along the way!