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Low Threshold High Ceiling - an Introduction
Creating a Low Threshold High Ceiling Classroom
Flippin' Discs
Odds and Evens
Cosy Corner
Two's Company
Factorising with Multilink
Hollow Squares
Low Threshold High Ceiling Tasks for Secondary Classrooms
Low Threshold High Ceiling Tasks for Secondary Classrooms
In our latest feature, we explore what is meant by Low Threshold High Ceiling tasks. The collection of problems is designed to offer accessible starting points that can lead to challenging extensions.
Low Threshold High Ceiling - an Introduction Age 5 to 18
Age 5 to 18
In this article for teachers, we explain what is meant by Low Threshold High Ceiling tasks, and why we like them.
Creating a Low Threshold High Ceiling Classroom Age 5 to 18
Age 5 to 18
This article explores the key features of a Low Threshold High Ceiling classroom.
Flippin' Discs Age 11 to 14Challenge Level 
Age 11 to 14
Challenge Level
Discs are flipped in the air. You win if all the faces show the same colour. What is the probability of winning?
Odds and Evens Age 11 to 14Challenge Level
Age 11 to 14
Challenge Level
Are these games fair? How can you tell?
Cosy Corner Age 11 to 14Challenge Level
Age 11 to 14
Challenge Level
Six balls are shaken. You win if at least one red ball ends in a corner. What is the probability of winning?
Two's Company Age 11 to 14Challenge Level
Age 11 to 14
Challenge Level
Seven balls are shaken. You win if the two blue balls end up touching. What is the probability of winning?
Factorising with Multilink Age 14 to 16Challenge Level
Age 14 to 16
Challenge Level
Can you find out what is special about the dimensions of rectangles you can make with squares, sticks and units?
Hollow Squares Age 14 to 16Challenge Level
Age 14 to 16
Challenge Level
Which armies can be arranged in hollow square fighting formations?