Lesson deck
NumberHigher
Rationalising the denominator
A square with a root on each side has a whole number area: that is why multiplying by the root clears the bottom. Then an answer that stays a fraction, a surd on top, a denominator to simplify first and the width of a rectangle.
A free GCSE Higher number lesson on rationalising the denominator, spec code N8. It has a lesson deck to teach from with a visualiser, a worksheet with answers, a puzzle, an exit ticket and an end of unit test.
Higher
Rationalising the denominator
Exit ticket
Rationalising the denominator
Puzzle
Four Fours:Surds
Test
Indices, standard form and surds test:Higher
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