Grade 3 Math Units

Explore Grade 3 Math unit plans with standards-aligned lessons that build multiplication, division, fractions, and real-world problem-solving skills.

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Grade 3 Math Units

Unit Plan 18 (Grade 3 Math): Midyear Synthesis—Facts, Area/Perimeter, and NBT

Mixed 3rd-grade math review: practice fact fluency, area vs. perimeter, rounding, and two-step word problems using models, equations, and estimates.

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Grade 3 Math Units

Unit Plan 17 (Grade 3 Math): Measurement—Mass & Volume Word Problems

Solve real-world mass (g/kg) and volume (L) word problems—one- and two-step—by modeling situations, writing equations with unknowns, and checking reasonableness using consistent units.

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Grade 3 Math Units

Unit Plan 16 (Grade 3 Math): Perimeter—Walk the Edge

Measure and add side lengths to find perimeter, solve missing-side problems with equations, and clearly distinguish perimeter (linear units) from area (square units) in real-world contexts.

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Grade 3 Math Units

Unit Plan 15 (Grade 3 Math): Area Formula A = l×w & Additive Area

Use A = l × w to find rectangle area, label in square units, and decompose rectilinear shapes into smaller rectangles to add their areas using the distributive property.

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Grade 3 Math Units

Unit Plan 14 (Grade 3 Math): Area as Unit Squares—Foundations

Understand area by tiling rectangles with unit squares and counting rows and columns; use arrays and repeated addition to model and label area in square units.

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Grade 3 Math Units

Unit Plan 13 (Grade 3 Math): Two-Step Word Problems & Reasonableness

Solve two-step word problems with unknowns in any position using equations and visual models, then use rounding and estimation to check for reasonableness and clearly justify solution steps.

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Grade 3 Math Units

Unit Plan 12 (Grade 3 Math): Multiplication & Division Facts—7s, 8s, 9s

Develop fact fluency for 7s, 8s, and 9s by breaking apart factors with the distributive property, leveraging patterns like 10n−n for 9s, and linking multiplication to division through fact families for efficient strategy-based mastery.

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Grade 3 Math Units

Unit Plan 11 (Grade 3 Math): Multiplication & Division Facts—3s, 4s, 6s

Build fact fluency for 3s, 4s, and 6s using doubles/near-doubles, arrays, equal groups, and distributive decomposition, while connecting multiplication and division through fact families to boost accuracy and efficiency.

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Grade 3 Math Units

Unit Plan 10 (Grade 3 Math): Multiplication & Division Facts—2s, 5s, 10s

Build early fluency with 2s, 5s, and 10s by spotting patterns on the hundreds chart, skip counting, and using place-value structure; connect multiplication and division through fact families, arrays, and number lines.

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Grade 3 Math Units

Unit Plan 9 (Grade 3 Math): Picture & Bar Graphs—Ask/Answer “How Many More/Fewer?”

Create and interpret single-unit picture and bar graphs with clear titles, labels, and keys; compare categories to answer how many more/fewer and total questions in one- and two-step contexts.

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Grade 3 Math Units

Unit Plan 8 (Grade 3 Math): Time & Intervals—Word Problems with All Operations

Build fluency telling and writing time to the minute, finding elapsed time with timelines, and solving one- and two-step word problems using equations with unknowns—checking reasonableness with benchmarks and inverse thinking.

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Grade 3 Math Units

Unit Plan 7 (Grade 3 Math): Addition/Subtraction within 1,000—Methods & Reasoning

Build fluency adding and subtracting within 1,000 by using place-value strategies, compensation, open number lines, and standard algorithms—explaining steps, checking for reasonableness, and critiquing mathematical reasoning.

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Grade 3 Math Units

Unit Plan 6 (Grade 3 Math): Place Value to 1,000 & Rounding

Build place-value fluency to 1,000 by reading/writing numbers, comparing with number lines, and rounding to the nearest 10 or 100 to make quick, reasonable real-world estimates.

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Grade 3 Math Units

Unit Plan 5 (Grade 3 Math): Properties of Operations—Strategy Builders

Build multiplication fact power by using commutative, associative, and distributive properties to turn hard facts into easier ones; model with arrays and area/tape diagrams to justify efficient strategies and solve real-world problems.

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Grade 3 Math Units

Unit Plan 4 (Grade 3 Math): Division as Equal Sharing & Grouping

Explore division through equal sharing and equal grouping; model with arrays, tape diagrams, and number lines; use inverse multiplication (unknown factor) to solve and justify answers.

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Grade 3 Math Units

Unit Plan 3 (Grade 3 Math): Arrays & Area Models—Structure of Multiplication

Use arrays and unit-square area models to build multiplication understanding, connect rows × columns to factors × product, and explore commutativity to choose the best representation for real-world problems.

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Grade 3 Math Units

Unit Plan 2 (Grade 3 Math): Equal Groups & Repeated Addition → Multiplication

Learn multiplication through equal groups, arrays, and number-line jumps—moving from skip-counting and repeated addition to writing equations with unknowns and choosing the best model to solve real-world problems.

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Grade 3 Math Units

Unit Plan 1 (Grade 3 Math): Building Our Math Community & Problem-Solving Norms

Establish math community norms with journals, self-checking, and error analysis; explore equal groups and arrays to preview multiplication while reinforcing place-value language.