This material consists of lessons and activity sheets for understanding key concepts and skills in Grade 1 Mathematics.
Objective
1. Apply the concept of cardinal and ordinal numbers up to 100 in various contexts.
2. Solve addition and subtraction problems.
3. Create a model to represent the concept of halves and fourths using whole objects and sets
Curriculum Information
Education Type
K to 12
Grade Level
Grade 1
Learning Area
Mathematics
Content/Topic
Numbers and Number Sense
Geometry
Patterns and algebra
Intended Users
Learners, Students
Competencies
Compares and classifies 2dimensional flatplane and 3dimensional solid figures according to common attributes
Identifies names and describes the four basic shapes square rectangle triangle and circle in 2dimensional flatplane and 3dimensional solid objects
Constructs equivalent number expression using addition and subtraction
Determines the missing terms in a given repeating pattern using one attributeletters numbers colors figures sizes etc
Determines the missing terms in a given continuous pattern using one attribute letters numbersevents
Illustrates addition as putting together or combining or joining sets
Visualizes and adds two onedigit numbers with sums up to 18 using the order and zero properties of addition
Adds two onedigit numbers using appropriate mental techniques eg adding doubles andor neardoubles
Visualizes and adds three onedigit numbers using the grouping property of addition
Visualizes and adds two to three onedigit numbers horizontally and vertically
Uses expanded form to explain the meaning of addition with regrouping
Visualizes and adds numbers with sums through 99 without or with regrouping
Adds mentally two to three one digit numbers with sums up to 18 using appropriate strategies
Adds mentally twodigit numbers and onedigit numbers with regrouping using appropriate strategies
Visualizes and solves onestep routine and nonroutine problems involving addition of whole numbers including money with sums up to 99 using appropriate problem solving strategies
Creates situations involving addition of whole numbers including money
Illustrates subtraction as taking away or comparing elements of sets
Illustrates that addition and subtraction are inverse operations
Visualizes represents and subtracts onedigit numbers with minuends through 18 basic facts
Visualizes represents and subtracts one to twodigit numbers with minuends up to 99 without regrouping
Uses the expanded form to explain subtraction with regrouping
Visualizes represents and subtracts one to twodigit numbers with minuends up to 99 with regrouping
Subtracts mentally onedigit numbers from twodigit minuends without regrouping using appropriate strategies
Visualizes represents and solves routine and nonroutine problems involving subtraction of whole numbers including money with minuends up to 99 with and without regrouping using appropriate problem solving strategies and tools
Creates situations involving subtraction of whole number including money
Draws the four basic shapes
Constructs three dimensional objects solid using manipulative materials
Identifies and creates patterns to compose and decompose using addition
Visualizes and finds the missing number in an addition or subtraction sentence using a variety of ways
