Mental Arithmetic: Rich Tasks
You cannot beat a good rich task! For me, a rich task is one that both stimulates and challenges students of all ages and abilities. Here is a selection of some of my favourites.
Contents
Median Rich Tasks and Purposeful Practise keyboard_arrow_up
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There are no words to express how much I love Don Steward and his amazing resources on his Median Blog. They allow for purposeful practise, to enable students to gain fluency in key skills. But they also have more than a sprinkling of richness, that leads students merrily along the path towards hypotheses and generalisations. Amazing.
Add/Subtract
Mental Arithmetic Methods (PowerPoint with animations via Jo Morgan)Sum 46
Triangle Differences
Right Triangle 1 to 7
Hard Haitch 1 to 7
Zorro 1 to 7
Plus
Tentative
7 Regions
Sum 46
Nineteen
Positive Differences
Distances from 5 numbers
Unlucky Sum
Mobile Inequalities
Squares inside Rectangles Prequel
Multiply/Divide
Equations with Tables PractiseTables Problems
Reduction Multiplication
Multiplication
Times Table
Mini Times Tables
Related Products
Dividing by 5
Divisibility Tests
Multiplication Short Cuts
All operations together
Cleverly CalculatingMaxi Pyramid
Four Operations
NRICH keyboard_arrow_up
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NRICH is simply one of the best websites for rich maths problems in the whole wide world.
Number DaisyGot It
Missing Multipliers
Countdown
Remainders
The Remainders Game
Magic Letters
Making a Difference
Playing Connect Three
Weights
Difference Sudoku
Where Can We Visit?
Overlaps
Other Rich Tasks keyboard_arrow_up
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A selection of some of my favourite rich tasks, including – I must confess – some of my own. For my complete collection, including my thoughts on what makes a good rich task, please visit the Rich Tasks page.
Build an Army – ArithmeticBuild an Army – Times Tables
Positive Differences
Choose 3 Numbers
Number Shacks
Diffy
Polar Bears
Number Snakes
Summing Consecutive Numbers
Arithmagon – Addition
Arithmagon - Subtraction
Arithmagon – Multiplication
Arithmagon – Division
James Tanton's Curriculum Essay June 2013: Piles and Holes
James Tanton's Curriculum Essay November 2015: Equating Familiarity