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# Mathematics Number and Quantity

## Common Core Standards

### Mathematics: Number and Quantity

In Number and Quantity, instructional time should focus on four critical areas: (1) extending the real number system, which includes developing rational exponents and relating rational numbers to irrational numbers through mathematical operations; (2) introducing units as a method of guiding students towards solving multi-step problems; (3) introducing the complex number system, showing how complex numbers can be evaluated using similar operations used with real numbers; (4) introducing the different properties of vectors and matrices and methods of modeling problems using those properties.
Sophia and Common Core Standards
Our Many Ways to Learn method makes it easy to integrate the new standards into your teaching. By using multiple instructors and teaching styles for each tutorial, we make sure you're reaching your students, so they can reach their goals.
Note: Our Common Core-aligned content is middle and high school-focused. We're continually expanding our library, so stay tuned - more great content coming soon.

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## N.Q - Quantities

##### Reason quantitatively and use units to solve problems.
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N.Q.1
Use units as a way to understand problems and to guide the solution of multi-step problems; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays.
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## N.CN - The Complex Number System

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##### Use complex numbers in polynomial identities and equations.
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N.CN.7
Solve quadratic equations with real coefficients that have complex solutions.
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