Don't worry, this resource actually exists. Scholars learn about imaginary numbers and work on problems simplifying square roots of negative numbers. As an extension, they research the history of imaginary numbers.

Concepts

complex numbers, imaginary numbers

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Additional Tags

imaginary numbers, square root of a negative number, complex numbers, absolute value, properties, conjugates, radical expressions, math

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Instructional Ideas

• Use the activity to introduce a unit on complex numbers

Classroom Considerations

• Pupils should be familiar with simplifying radicals
• Note that the lesson assumes that the class has math journals

Pros

• Includes a rubric for the activity
• Suggests an intervention activity for struggling learners

Cons

• None

Common Core

HSN-CN.A.1 HSN-CN.A.2