# Q1, W4: September 4-7

Teacher Kristin Andreason 8th Grade Intensive Math 8 Four Unit 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

Tuesday:

• 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

Wednesday:

• 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

Thursday/Friday:

• 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