✨Grade 1 Math focuses on
- building a strong foundation in addition and subtraction within 20,
- understanding place value up to 120, and solving simple word problems.
- Students also learn to measure lengths, tell time to the hour and half-hour, and identify basic shapes and their attributes.
These skills help develop number sense and problem-solving abilities essential for future math learning.
1. Operations and Algebraic Thinking (OA)
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Add and subtract within 20
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Solve word problems involving addition and subtraction (e.g., joining, separating, comparing).
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Represent problems with objects, drawings, and equations.
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Understand relationship between addition and subtraction
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Use subtraction as unknown-addend problems.
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Apply properties of operations
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Understand commutative (a + b = b + a) and associative properties.
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Fluency
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Add and subtract within 20 fluently (quickly and accurately).
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2. Number and Operations in Base Ten (NBT)
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Counting and Number Patterns
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Count to 120, starting at any number less than 120.
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Read and write numbers to 120.
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Place Value Concepts
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Understand tens and ones (e.g., 34 = 3 tens + 4 ones).
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Comparing Numbers
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Compare two-digit numbers using >, <, =.
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Adding and Subtracting Within 100
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Use place value understanding to add and subtract.
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Mentally find 10 more or 10 less than a given number.
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3. Measurement and Data (MD)
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Measuring Length
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Order three objects by length.
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Compare lengths indirectly using a third object.
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Measure length using whole units.
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Time
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Tell and write time to the hour and half hour.
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Data and Graphs
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Organize, represent, and interpret data with up to three categories.
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Ask and answer simple questions about data.
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4. Geometry (G)
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Shapes and Their Attributes
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Distinguish defining (number of sides) vs. non-defining attributes (color).
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Build and draw shapes.
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Compose Shapes
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Combine two- or three-dimensional shapes to form new shapes.
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Partitioning Shapes
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Divide circles and rectangles into halves and fourths.
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Understand and use terms halves, fourths, and quarters.
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Detailed Topics Summary
| Domain | Topics & Skills |
|---|---|
| Operations & Algebraic Thinking | - Addition & subtraction story problems within 20 - Use objects, drawings, equations - Understand inverse operations - Properties of addition - Fluency with facts to 20 |
| Number & Operations in Base Ten | - Count to 120 - Read/write numbers - Place value (tens and ones) - Compare two-digit numbers - Add/subtract within 100 using place value - Find 10 more/less mentally |
| Measurement & Data | - Order objects by length - Measure length using units - Tell/write time to hour/half hour - Organize & interpret data in charts |
| Geometry | - Identify shape attributes - Build/draw shapes - Compose shapes - Partition shapes into halves & fourths |