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Featured UK Key Stage 3-5; US Grades 5-12
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primary lower
Featured UK Key Stage 1, US Grade 1 & 2
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primary
Featured UK Key Stage 2; US Grade 3 & 4
secondary lower
Featured UK Key Stages 3 & 4; US Grade 5-10
secondary
secondary upper
Featured UK Key Stage 4 & 5; US Grade 11 & 12
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Cube Roots
Evaluate without a calculator: (5 sqrt2 + 7)^{1/3} - (5 sqrt2 - 7)^1/3}.
Conjugate Tracker
Stage: 5
Challenge Level:
Learn about complex numbers from
An Introduction to Complex Numbers
and
What are Complex Numbers?
Making and proving conjectures
.
Complex roots of equations in conjugate pairs
.
Quadratic equations
.
Interactivities
.
Generalising
.
Surds
.
Golden ratio
.
Argand diagram
.
Mathematical reasoning & proof
.
Complex numbers
.