Q1, W4: September 4-7

TeacherKristin Andreason
Subject Area8th Grade Intensive Math
Grade Level8
Week #Four
Unit of InstructionUnit One: Rational and Irrational Numbers
Standard(s) Taught

MAFS.8.NS.1.1:  Know that numbers that are not rational are called irrational.  Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually and convert a decimal expansion which repeats eventually into a rational number.

MAFS.8.NS.1.2:  Use rational approximations of irrational numbers to compare the size of irrational numbers, locate them approximately on a number line diagram, and estimate the value of expressions.

Learning Targets and Learning Criteria
  • Students will be able to locate rational and irrational numbers on a number line
  • Students will understand that to add and subtract fractions, they must have the same denominator
  • Students will learn how to find the least common denominator so that they can put fractions in a form that they can compare, add, or subtract
Classroom Activities


  • Students will do a number line activity in which they arrange 50 rational and irrational numbers in order to create a number line by putting them in decimal form


  • We will look at the difference between adding and subtracting fractions and multiplying and dividing fractions
  • Students will learn three methods for finding the least common denominator


  • Students will do three rotations:  a Mathspace on Comparing Fractions, a Least Common Denominator Maze Activity, and a game of Common Denominator War
Assignments Due
  • Mathspace on Comparing Fractions due September 7
  • Least Common Denominator Maze due September 7
Additional Resources

All IEP and ESOL accommodations will be provided daily.