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| ===Notes for teachers=== | | ===Notes for teachers=== |
− | #Meaning and of surds
| + | If you can't simplify a number to remove a square root (or cube root etc) then it is a surd. |
− | #differentiate like and unlike surds
| + | If it is a root and irrational, it is a surd. |
− | #Examples of pure and mixed surds
| + | But not all roots are surds. |
− | #Rationalising the denominator.
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| ===Activities=== | | ===Activities=== |