“Hidden Sum” Wooden Rotating Maths Puzzle – Logic Brain Teaser (18 cm / 25 cm, 7+)
Price range: 20,00 € through 30,00 €“Hidden Sum” is a wooden maths puzzle with two rotating rings and a fixed base. The task: line up the numbers so that every vertical column adds up to the same total – that is how you discover the hidden sum. A great screen-free logic game for Montessori-inspired learning, home learning and even escape rooms.
✅ 2 sizes: 18 cm (compact) and 25 cm (for classrooms and learning spaces).
✅ High-quality birch plywood with a child-safe finish.
✔ Made in Lithuania.
✔ CE marked – safe for children, compliant with EU safety standards.
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