This material focuses on developing the skill of writing equivalent expressions for given addition or subtraction equations. By exploring the relationship between numbers and operations, teachers would let the learners on how to manipulate expressions while maintaining their equality. Through practice examples like 2+3 = 1+4 or 10-5 = 6-1, learners will deepen their understanding of number properties and arithmetic operations. This lesson content standard aims to enhance students' algebraic thinking, problem-solving abilities, and mathematical flexibility in expressing numerical relationships.
Objective
To demonstrate the commutative property of addition and subtraction.
Curriculum Information
Education Type
K to 12
Grade Level
Grade 1
Learning Area
Mathematics
Content/Topic
Numbers and Number Sense
Patterns and algebra
Intended Users
Educators
Competencies
Constructs equivalent number expression using addition and subtraction
Adds mentally two to three one digit numbers with sums up to 18 using appropriate strategies
