How do Addition and Subtraction Act Like Opposites?
Learning objective:
1) Work flexibly with numbers to develop mental math skills.
2) Practice repetitive addition.
3) Pattern recognition.
4) Develop fluency with numbers.
Grade Levels: 1st Grade, 2nd Grade
Number of Participants: 1- 4
Activity Sequence Number: B.9
Skills:
Uses: Addition, Subtraction
NCTM Standards:
Pre-K - 2
1.2.0 Understand meanings of operations and how they relate to each other.
1.2.1 Understand meanings of addition and subtraction and relationship between the two operations.
Grades 3 - 5
N/A
Grades 6 - 9
N/A
Tips & Tricks:
*If you place the correct multiple on the 1st step of each staircase rather than a random number, although the focus remains on addition and subtraction, children will begin becoming familiar with multiples.
Downloadable Documents:
- Basic Instructions:
Activity B.9 (mega educator)
Activity B.9 (mini educator)
Previous Lessons:
You will need to teach children how to carry in double-digit addition problems and borrow in double-digit subtraction problems before you teach this lesson.Children who cannot compute these differences and sums mentally will be able to use the foam cards to count on to find the correct answers.
Next Lessons:
Other Standards:
California
1st Grade NS 2.0, 2.2, 2.4, 2.5, 2.6 2nd Grade NS 2.0, 2.2, 2.3, A&F 1.2, 1.3
Response to Intervention Tier:
1,2
