Time for a bath! Young children love and need to engage deeply with materials. Immersing themselves with their whole body in a bath full of smooth beans, soft paper, or bubbling foam - what an experience for all the senses! But bathtubs can be even more: playgrounds offering three or four unusual materials, opportunities for exploration and deepening. In this book, we present a wide variety of ideas: 30 new, practically tested concepts for action baths that allow children to engage intensely - and can be easily put together by you.