Learn a little by doing a little
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Move beyond an answer. Explore visual reasoning puzzles and interactive challenges across all 6 subjects, with instant rule-based verification and step-by-step explanations.
Original visual challenges
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Learning stage
Your next discovery
What belongs in each mystery box?
Every mystery box holds the same value. Make the two sides balance.
Equal values make a level balance.
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Turn a little understanding into a fresh page of practice.
Streaks count different challenges solved consecutively in this session and reset after an incorrect check. Repeating a solved question adds no points. Original rule-based practice. Age bands are guidance, not an assessment or curriculum certification.
Subject challenges
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Learning stage
ReasoningAges 7-9Logical deduction
Question 1 of 4Balance scale puzzles
5 identical boxes and a 11 kg weight balance 26 kg altogether. What is the mass of 1 box?
Use equal-weight reasoning to work out the mass of a single mystery box on a balanced scale.
0 of 4 solved in this round
Reasoning category