Ages 11 – 13

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Ages 11 - 13

Handling Data: Interactive Lessons
Venn Diagrams
Ages 11 - 13

Venn Diagrams

How to use Venn diagrams to organise sets of data.
Handling Data: Interactive Lessons
Averages using the Median and Mode
Ages 11 - 13

Averages using the Median and Mode

How to work out the median and mode average from listed data.
Number: Interactive Lessons
Addition with Negative Numbers
Ages 11 - 13

Addition with Negative Numbers

How to perform addition with negative numbers.
Number: Interactive Lessons
Square Numbers and Square Roots
Ages 11 - 13

Square Numbers and Square Roots

How to calculate square numbers and roots using written and calculator methods.
Number: Interactive Lessons
Comparing Positive and Negative Numbers
Ages 11 - 13

Comparing Positive and Negative Numbers

How to compare positive and negative numbers.
Algebra: Interactive Lessons
Solving an Equation with Function MachinesSolving an Equation with Function Machines
Ages 11 - 13

Solving an Equation with Function Machines

How to use function machines to break down algebraic expressions.
Algebra: Interactive Lessons
A horizontal maths resource slide from Mr Mathematics titled Collecting Like Terms with a corner ribbon labeled KS3 Year 7. The main activity instructs to Match the equal cards, displaying four blue algebraic expressions on the left to be simplified and matched with four simplified green answer blocks on the right.
Ages 11 - 13

Simplifying Expressions by Collecting Like Terms

How to simplify expressions by collecting like terms.
Algebra: Interactive Lessons
Substituting Numbers into Expressions
Ages 11 - 13

Substituting Numbers into Expressions

How to use the order of operations to substitute numbers into expressions.
Algebra: Interactive Lessons
Writing Expressions using Keywords
Ages 11 - 13

Writing Expressions using Keywords

How to form algebraic expressions from written descriptions.
Handling Data: Interactive Lessons
Comparing Stem and Leaf Diagrams
Ages 11 - 13

Comparing Stem and Leaf Diagrams

Students learn how to compare distributions using stem and leaf diagrams.
Handling Data: Free Resources
Mean Average and Range
Ages 11 - 13

Mean Average and Range

How calculate the mean average and range from a set of discrete data.
Handling Data: Interactive Lessons
How to Calculate the Mean Average
Ages 11 - 13

How to Calculate the Mean Average

How to calculate the mean average from data in a list.
Handling Data: Interactive Lessons
Drawing Stem and Leaf Diagrams
Ages 11 - 13

Drawing Stem and Leaf Diagrams

How to draw a stem and leaf diagram using a key.
Number: Interactive Lessons
Factor Pairs of Numbers and Terms
Ages 11 - 13

Factor Pairs of Numbers and Terms

Students learn how to find all the factor pairs of numbers and terms.
Number: Interactive Lessons
KS3 Year 7 maths lesson slide titled Multiples of Numbers by Mr Mathematics. Features a lowest common multiple word problem about Matthew emptying bins every 5 days and Martin every 7 days, both starting on 5th July, alongside July and August calendar grids.
Ages 11 - 13

Multiples of numbers and expressions

Students learn how to calculate multiples of numbers and expressions.
Number: Interactive Lessons
Finding Prime Numbers
Ages 11 - 13

Finding Prime Numbers

Students discover prime numbers from factor pairs and the Sieve of Eratosthenes.

Mr Mathematics Blog

Developing Mathematical Thinking Beyond Procedural Fluency

July 10, 2026
A research-backed case exploring why over-reliance on automated math homework platforms and repetitive worksheets lowers student expectations, and how departments can build genuine mathematical thinking.

Converting Between Fractions, Decimals and Percentages

July 4, 2026
How to teach converting between fractions, decimals and percentages.

From Key Skills to Deep Connections: Problem Solving in Secondary Maths

June 28, 2026
Four problem solving lessons to develop student's mathematical reasoning and communication skills.