Lesson 17
Add 0 and 1
Lesson Purpose
Lesson Narrative
In previous lessons, students connected expressions to drawings and used drawings to help find the value of expressions. In previous sections and lessons, students developed their understanding of the meaning of zero as they solved story problems with a result of 0 and found the value of expressions where 0 is added or subtracted and where 0 is the result. In this lesson, students fill in expressions to represent 0 and 1 being added to a group of images and find the total. While students find the value of the expressions in the first activity, they may notice, through repeated reasoning, the pattern that the number stays the same when 0 are added and that the total is the next counting number when 1 is added (MP7, MP8). In the second activity, students notice and discuss these patterns.
 Representation
 MLR2
Activity 2: Notice $+ 0$ and $+ 1$ Patterns
Learning Goals
Teacher Facing
 Understand that adding 0 results in the same number.
 Understand that adding 1 results in the next number in the count sequence.
Student Facing
 Let’s see what happens when we add 0 or 1.
Required Materials
Materials to Gather
Materials to Copy
 Find the Value of Expressions within 10 Stage 1 Recording Sheet
 Find the Value of Expressions within 10 Stage 1 Cards
 Add 0 and 1 Mat
Required Preparation
Activity 1:
 Each group of 2 needs 1 connecting cube.
Activity 3:
 Gather materials from:
 Roll and Add, Stages 1 and 2
 Shake and Spill, Stages 13
 Number Race, Stage 1
 Math Stories, Stages 1 and 2
CCSS Standards
Lesson Timeline
Warmup  10 min 
Activity 1  10 min 
Activity 2  10 min 
Activity 3  25 min 
Lesson Synthesis  10 min 
Cooldown  0 min 
Teacher Reflection Questions
Print Formatted Materials
For access, consult one of our IM Certified Partners.
Additional Resources
Google Slides  For access, consult one of our IM Certified Partners. 

PowerPoint Slides  For access, consult one of our IM Certified Partners. 