Learn a little by doing a little
Make an idea click.
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.
What belongs in each mystery box?
Every mystery box holds the same value. Make the two sides balance.
0 of 7 challenge types explored at this stage
Keep the discovery going.
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.
Practise by subject and stage.
If ★ represents the same whole number each time and 3 × ★ + 16 = 61, what number does ★ stand for?
Deduce the value of a repeated mystery symbol in a two-step arithmetic equation.
0 of 4 solved in this round
Featured, challenges & worksheets in Reasoning
Number patterns
Find the addition rule in a number sequence and use it to complete the next term.
Balance scale puzzles
Use equal-weight reasoning to work out the mass of a single mystery box on a balanced scale.
Set overlap & Venn totals
Use inclusion-exclusion reasoning to find the total number of members across two overlapping sets.