Lesson Plan

The Decimal Expansion of Some Irrational Numbers

Curated and Reviewed by Lesson Planet

Develop a definition of irrational numbers through an exploration of square roots. The 11th lesson in this series of 25 asks scholars to estimate the value of a square root. Learners observe as the estimation extends further and further past the decimal. 

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CCSS: Designed
Additional Tags
Instructional Ideas
  • Incorporate the lesson to explore the meaning of an irrational number
  • After the lesson, have individuals classify numbers as rational or irrational
Classroom Considerations
  • Pupils should have prior experience with square roots and estimating their value
Pros
  • Uses a discovery approach to help create an understanding of irrational numbers
  • Includes a set of practice problems that incorporates both rational and irrational numbers
Cons
  • None
Common Core