Lincoln-Way Community High School
Mathematics Department – Algebra 1
Unit 8 - SQUARE ROOTS
Enduring Understanding:
Equations and formulas are used to describe problems in the world and solutions to
many of these problems can be irrational (ugly) or not real (imagine that!).

Essential Questions:

  • What is meant by an irrational number?
  • What type of equation would have an irrational solution?
  • How do I know if a radical can be simplified?
  • When will I use radicals again in math?
  • Consider that you can represent the value of a radical in a diagram, but you may not be able to give it an exact decimal value.
  • How do you determine the best strategy for finding solutions to a multitude of problems?

Target Goals:

  • To be able to solve more complicated equations.
  • To be able to simplify expressions involving radicals.
  • Recognize a radical and what it means.
  • To be able to work with simple rational exponents.
  • To be able to solve equations by using completing the square and quadratics.
  • To be able to solve radical equations.

Assessment:

  • White board problems in class.
  • Quiz/Test
  • Approximate the value of a square root without using a calculator.
  • Explain, in words, what the square root of a number means.

Activities:

  • Pythagorean theorem problems.
  • Use geometric figures to represent irrational numbers.
  • Find distances between bases on a baseball/softball field.

State Goals:
6.B.3c - Identify and apply properties of real numbers including pi, squares, and square roots.

8.D.3a - Solve problems using numeric, graphic or symbolic representations of variables, expressions, equations and inequalities.

8.D.3c - Apply properties of powers, perfect squares and square roots.

Return to Algebra 1 Curriculum Guide
Return to Algebra 1 Course Description
Return to Math Department Course Sequence
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Last updated: January 25, 2008->