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Square numbers, powers and roots

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Learning Ladder - Video Guide       Setting up Activities - Video Guide

 

Ladder Pattern Builder Skill Check Pair Game

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Overview:

Squaring and square rooting are inverses, like multiplying and dividing and so should be taught together.

These investigations give a step by step introduction to the topic.




Step 5
How do Square Numbers Work?
Investigate!
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Notes for Teachers:

Learn about square numbers.
Quiz: A quiz on the first ten square numbers, in a random order.

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How do Square Roots Work?
Investigate!
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Notes for Teachers:

Find square roots.
Quiz: Find the square roots of the first ten square numbers.

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Step 6
How do Powers Work?
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Notes for Teachers:

Build number patterns to explore how powers work.
Quiz: Easy powers of 2, 3, 4, and 5. (eg 5 cubed, 4 squared etc)

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How do Roots Work?
Investigate!
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Notes for Teachers:

Explore roots as the inverses of powers.
Quiz: Mixed examples such as √16, 3√27 etc.

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Step 7
Powers with Negative Numbers
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Notes for Teachers:

Explore what happens if you square, cube and find other powers of negative numbers.
Quiz: Examples such as (-4)2 or (-3)3 etc

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Roots with Negative Numbers
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Notes for Teachers:

Explore what happens when you try to find the square root, cube root and fourth root of -1. Discover that it is possible to find odd roots of negative numbers but not even roots.
Quiz: Examples like 3√(-8) = ?, √? = -6 etc

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Step 8
Zero and Negative Powers
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Notes for Teachers:

23 means 2x2x2. 22 means 2x2. 21 means 2. But what about 20 or 2-1 or 2-2. Explore what happens when you follow patterns past zero and discover how negative powers work.
Quiz: Questions such as 4-1, 3-2 etc.

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       How it Works: Overview   

 
     
  Maths Investigations - Challenging You to Think about Maths