Design a detailed lesson plan for teaching the fundamental concepts of Quantum Superposition and Quantum Entanglement to an audience of five-year-old children. You are strictly forbidden from using scientific jargon (no 'wave functions', no 'particles', no 'quarks'). Every concept must be explained using analogies based strictly on playground equipment: slides, swings, seesaws, and sandbox sand. Include an activity section where the children act out these concepts physically.