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For younger learners

  • Early Years Foundation Stage

All about Averages

All about averages

How well do you really understand mean, median and mode?

In these puzzling problems we invite you to be playful with numbers and discover how averages change when data sets are tweaked.

About Average 
Age 11 to 14
Challenge Level Yellow star

Can you find sets of numbers which satisfy each of our mean, median, mode and range conditions?

Unequal Averages 
Age 11 to 14
Challenge Level Yellow starYellow star

Play around with sets of five numbers and see what you can discover about different types of average...

Wipeout 
Age 11 to 16
Challenge Level Yellow starYellow star

Can you do a little mathematical detective work to figure out which number has been wiped out?

The Lives of Presidents 
Age 11 to 16
Challenge Level Yellow star

Do Presidents of the USA live longer now than in the past?

Related

  • Statistics - Stage 3
  • Statistics - Stage 4

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Patterns in Number Sequences

These resources are designed to get you thinking about number sequences and patterns.

Secondary Student Latest

Latest list for the Lower Secondary Student page

Curriculum Topics

Problems organised by curriculum topic for lower secondary students.

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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