Lesson: Subtracting Parts of a Whole Mathematics • 4th Grade

In this lesson, we will learn how to use models to subtract proper fractions with the same denominator.

Lesson Plan

Students will be able to

use concrete and pictorial representations to subtract a fraction from another fraction with the same denominator within one whole,
recognize that only the numerator changes when fractions with the same denominator are subtracted (the number of equal parts in the whole stays the same),
write and complete subtraction sentences,
apply knowledge of subtracting parts of a whole when solving word problems.

Q1:

Mason had a whole chocolate bar.

What could the chocolate bar look like after he has eaten one-sixth of it?

Q2:

Subtract from . Pick the model that shows.

Q3:

Solve .