This collection of tasks is part of the activities for 11-14 year olds section of the Maths At Home feature. The activities below all include an online interactivity where you can test your ideas and make discoveries. The stars represent the challenge level, with three stars indicating the most challenging activities.
You may also wish to explore Interactive Games and Puzzles for 7-11 year olds, and Interactive Games and Puzzles for 14-16 year olds.
Factors and multiples game
A game in which players take it in turns to choose a number. Can you block your opponent?
Shifting times tables
Can you find a way to identify times tables after they have been shifted up or down?
Isosceles triangles
Semi-regular tessellations
Semi-regular tessellations combine two or more different regular polygons to fill the plane. Can you find all the semi-regular tessellations?
Odds and evens
What numbers can we make now?
Imagine we have four bags containing numbers from a sequence. What numbers can we make now?
Connect three
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?