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==Key Stage 2==
===Meaning===
[[Hardness]] is how difficult it is to change the shape of an [[object ]] with a [[force]].
===About Hardness===
| style="height:20px; width:200px; text-align:center;" |Brick
| style="height:20px; width:200px; text-align:center;" |Glass
|-
|[[File:BrickRed.png|center|200px]]
|[[File:GlassBroken.png|center|200px]]
|}
{| class="wikitable"
|+ Hard Materials
|-
| style="height:20px; width:200px; text-align:center;" |Rock
| style="height:20px; width:200px; text-align:center;" |Metal
|-
|[[File:Rock.png|center|200px]]
|[[File:Metal.png|center|200px]]
|[[File:TyreRubber.png|center|200px]]
|}
==Key Stage 3==
===Meaning===
[[Hardness]] is how difficult it is to change the shape of an [[object]] with a [[force]].
===About Hardness===
: [[Object]]s which need a lot of [[force]] to change their shape are called '''hard'''.
: [[Object]] which need very little [[force]] to change their shape are called '''soft'''.
: Very '''hard''' objects are often [[Brittle]] which means they can break when a large [[force]] is applied.
==Key Stage 4==
===Meaning===
[[Hardness]] is how difficult it is to change the shape of an [[object]] with a [[force]].
===About Hardness===
: [[Object]]s which need a lot of [[force]] to change their shape are called '''hard'''.
: [[Object]] which need very little [[force]] to change their shape are called '''soft'''.
: Very '''hard''' objects are often [[Brittle]] which means they can break when a large [[force]] is applied.