Skip over navigation
menu
search
Teachers
expand_more
Early years
Primary
Secondary
Post-16
Events
Professional development
Students
expand_more
Primary
Secondary
Post-16
Parents
expand_more
Early Years
Primary
Secondary
Post-16
Problem-Solving Schools
About NRICH
expand_more
About us
Impact stories
Support us
Our funders
Contact us
search
search
Or search by topic
Number and algebra
The Number System and Place Value
Calculations and Numerical Methods
Fractions, Decimals, Percentages, Ratio and Proportion
Properties of Numbers
Patterns, Sequences and Structure
Algebraic expressions, equations and formulae
Coordinates, Functions and Graphs
Geometry and measure
Angles, Polygons, and Geometrical Proof
3D Geometry, Shape and Space
Measuring and calculating with units
Transformations and constructions
Pythagoras and Trigonometry
Vectors and Matrices
Probability and statistics
Handling, Processing and Representing Data
Probability
Working mathematically
Thinking mathematically
Developing positive attitudes
Cross-curricular contexts
Advanced mathematics
Decision Mathematics and Combinatorics
Advanced Probability and Statistics
Mechanics
Calculus
For younger learners
Early Years Foundation Stage
Tangling and Untangling
Problem
Getting Started
Student Solutions
Teachers' Resources
A chance to experiment with fractions in an intriguing context.
This is the first of three related problems. The second problem is
More Twisting and Turning
and the third is
All Tangled Up
.
To find out more about John Conway's problem take a look
here
.