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How much can you do with just one drop of water? A lot more than you’d think!
The Only One Drop kit invites curious minds to explore the fascinating behaviours of a single drop—discovering how it can magnify, bounce, float, form vortex rings, and even reveal the mysterious lotus effect.
With a dropper bottle, Pasteur pipette, and clear instructions included, this clever kit offers a hands-on way to explore surface tension, water properties, and careful observation skills.
Just one gentle squeeze opens the door to a world of miniature experiments and big discoveries!
Made in: Germany
Materials: Glass, Plastic
Dimensions: L 11.5cm W 8.3cm H 4.6cm (approx.)
Weight: 130g (approx.)
Recommended age: 8+ years, designed for use under adult supervision
WARNING/S:
Safety:
Discover Kraul Water Kits, Tools & Toys that turn streams and splashes into hands-on science and exploratory play.
Rooted in Waldorf principles and a family legacy since the 1920s, Kraul creates hands-on STEM kits that bring children closer to nature. Designed to explore water, air, earth, and fire, each build introduces real scientific ideas through playful experimentation. From moving mechanisms to outdoor-inspired constructions, every kit encourages meaningful discovery through doing.
Kraul invites children and families to build, test, and explore motion, gravity, and energy using thoughtfully crafted wooden kits made from natural materials. With a focus on learning through experience, these designs strengthen problem-solving, coordination, and curiosity while keeping play deeply connected to the natural world and real-life science exploration.
Oskar's Wooden Ark acknowledges the Traditional Custodians of the Land and Country on which we work. We pay our respects to Aboriginal and Torres Strait Islander peoples, their Ancestors, and Elders past and present, whose connection to this land continues to nurture it, as it has for generations.