## Reflection: Checks for Understanding Simplifying Square Roots - Section 1: Warm up and Homework Review

Square roots are something that Algebra 2 students have already studied for several years.  My goal for this lesson is to ensure that their knowledge level is deep enough to apply to quadratic and then polynomial equations.  This warm up lets me know how many students understand the basic principal behind square roots.  I did have several students just use a calculator and fess up to that.  This student (1), while missing the concept, used some reasoning by associating the decimals.  This student (2) gave me the answer that I was looking for, namely he used the nearest perfect square to estimate the solution.  Given the number of students who made mistakes on their warm up, I am glad we did this lesson.

Checks for Understanding: Do They Know Square Roots?

# Simplifying Square Roots

Unit 4: Complex Numbers and Quadratic Equations
Lesson 2 of 12

## Big Idea: Area models introduce this Common Core transitional lesson on simplifying square roots.

Print Lesson
2 teachers like this lesson
Standards:
Subject(s):
Math, Algebra, Quadratic Equations, Algebra 2, master teacher project, simplifying radicals, Algebra 1, Imaginary Numbers, complex numbers
50 minutes

### Amelia Jamison

##### Similar Lessons

###### Inconceivable! The Origins of Imaginary Numbers
Algebra II » The Complex Number System
Big Idea: Imaginary numbers aren't any more imaginary than negative numbers!
Favorites(3)
Resources(14)
Fort Collins, CO
Environment: Suburban

###### Roots of Polynomial Functions - Day 2 of 2
12th Grade Math » Polynomial and Rational Functions
Big Idea: Find complex roots and learn about the history of imaginary numbers.
Favorites(1)
Resources(12)
Troy, MI
Environment: Suburban

###### Review of Complex Numbers
12th Grade Math » Vectors and Complex Numbers
Big Idea: How is a complex number in standard form similar to a vector in unit vector form?
Favorites(0)
Resources(16)
Independence, MO
Environment: Suburban