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Lesson Starter/Plenary/Main

Often, the best lessons are the very simple ones. Here are some of the short presentations I have used in the past. Click on the title to view

Alien Numbers

At its simplest, students can just interpret the numbers from outer space alien into earthling. At its best, it makes a good starting point for discussion about our number system.

When is a Fraction Bigger than a Half?

A simple method of deciding whether a fraction is bigger or smaller than a ½

The Equations of Lines Parallel to the x and y axes

A simple question and answer sessions on this often misunderstood concept


Solving simple linear equations followed by equations with unknowns on both sides of the equals sign

Round to 1 Decimal Place

A simple presentation on this skill

Missing Numbers

The connection - inverse relationship - between multiplication and division.

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Tarsia Jigsaws


+ - x & ÷ Decimals

Directed numbers

Faction of a quantity

Percentage of a number

Hire formulae

x & ÷ Whole numbers

Rank order

Simplify a fraction

Simplify an expression


x & ÷ Powers of 10


Fractions  decimals & percentages

Percentages problems

Fractions to percentage


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