Lesson: Comparative Bar Models: Numbers up to 20 Elementary School Mathematics 1st Grade • Go Math! • Grade 2 • Common Core • enVisionmath2.0 • Grade 2 • Volume 1 • Common Core

Mathematics

In this lesson, we will learn how to solve one-step additive comparison problems with numbers up to 20 by drawing a comparative bar model.

Sample Question Videos

Q1:

Natalie took 9 photos, and Olivia took 2 photos. How many more photos did Natalie take than Olivia?

Q2:

Michael has 15 candies, but Benjamin has 5.

How many more candies does Michael have?

How many candies do the boys have in total?

Q3:

Use the part-whole model to find the missing number: .

Preview