Juvenile literature Science -- Experiments -- Experiments Study and teaching (Preschool) -- Activity programs -- Models -- Rainbow -- Activity programs Butterflies -- Cornstrach -- Emulsions Emulsions -- Flipsticks (Toy) -- Gums and resins, Synthetic Liquids -- Motion perception (Vision) -- Odors -- Plasticity Plasticity -- Rainbows -- Rocket (Aeronautics) -- Rockets (Aeronautics) -- Study and teaching (Primary) -- Tornadoes Tornadoes --