Unit 4, Lesson 17
Add 0 and 1
Kindergarten
Preparation
Lesson Narrative
In previous lessons, students connected expressions to drawings and used drawings to help find the value of expressions. Students developed their understanding of the meaning of zero as they solved story problems with a result of 0. Students 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. In the first activity, students may notice through repeated reasoning that the number stays the same when 0 is 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
- Generalize (orally) that adding 0 results in the same number.
- Generalize (orally) that adding 1 results in the next number in the count sequence.
- Let’s see what happens when we add 0 or 1.
Required Materials
Activity 1
Required Preparation
- Each group of 2 needs 1 connecting cube.
- Gather materials from previous centers:
- Roll and Add, Stages 1 and 2
- Shake and Spill, Stages 1-3
- Number Race, Stage 1
- Math Stories, Stages 1 and 2
Suggested Centers
NoneTeacher Reflection Questions
The standards ask students to count on from a given number (K.CC.A.2) and to understand that each successive number name refers to a quantity that is one larger (K.CC.B.4.c). How will the work in this lesson support students in counting on from a given number?