Lesson: Comparing Masses Indirectly Mathematics • 1st Grade

In this lesson, we will learn how to indirectly compare the masses of two objects by using scales or nonstandard units to compare them to a third object.

Lesson Plan

Students will be able to

compare two objects by mass by comparing them both to a third object,
write comparison statements comparing two objects,
order three objects using indirect comparison.

Lesson Video

Lesson Worksheet

Q1:

Jacob is comparing the amount of liquid that three buckets can hold.

The orange bucket holds more water than the green bucket; the orange bucket has a greater capacity.

Jacob compared the capacity of the orange and blue buckets like this.

Which holds more water?

Pick the correct symbol to compare the capacities of the green and blue buckets.

Q2:

Which item is heaviest?

Q3:

Which item is the lightest?