All Math Units

Unlock the complete collection of K–12 math units featuring engaging, standards-aligned lessons that build problem-solving, fluency, and real-world mathematical understanding.

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Grade 2 Math Units

Unit Plan 19 (Grade 2 Math): Shape Attributes—Triangles, Quadrilaterals, Pentagons

Recognize and draw triangles, quadrilaterals, pentagons, hexagons, and cubes by counting sides, angles, and faces; build and label precise models to explain shape attributes.

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Grade 2 Math Units

Unit Plan 18 (Grade 2 Math): Midyear Synthesis—OA + NBT + MD

Blend word problems, place-value computation, time and money skills, and data displays; choose representations, justify strategies, and check reasonableness using units and place-value thinking.

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Grade 2 Math Units

Unit Plan 17 (Grade 2 Math): Picture & Bar Graphs—Single-Unit Scales

Draw and interpret picture and bar graphs with single-unit scales, then solve put-together, take-apart, and compare problems by reading data and finding differences.

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Grade 2 Math Units

Unit Plan 16 (Grade 2 Math): Generate Measurement Data & Line Plots (Whole Units)

Measure lengths to the nearest whole unit, organize data in simple line plots, and answer how many more/less questions by finding differences using number-line reasoning.

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Grade 2 Math Units

Unit Plan 15 (Grade 2 Math): Money—Solve Dollar/Cent Word Problems

Count mixed coins using $ and ¢, skip-count efficiently by 25s/10s/5s/1s, and solve one- and two-step purchase and change word problems with clear models and correct notation.

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Grade 2 Math Units

Unit Plan 14 (Grade 2 Math): Time to the Nearest Five Minutes (a.m./p.m.)

Tell and write time to the nearest five minutes on analog and digital clocks, use a.m./p.m. correctly, and model simple elapsed time with 5-minute jumps on an open number line.

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Grade 2 Math Units

Unit Plan 13 (Grade 2 Math): Mentally Add/Subtract 10s & 100s

Mentally add or subtract 10 or 100 from numbers 100–900, explain which digit changes using place-value patterns, and check reasonableness with quick structure-based strategies.

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Grade 2 Math Units

Unit Plan 12 (Grade 2 Math): Add/Sub within 1,000—Models to Methods

Add and subtract within 1,000 using base-ten models, expanded form, and written methods; regroup tens/hundreds, choose tools strategically, and explain why strategies work using place value.

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Grade 2 Math Units

Unit Plan 11 (Grade 2 Math): Adding Several Two-Digit Numbers

Add up to four two-digit numbers using place-value strategies and friendly grouping to make tens; apply properties of operations, check reasonableness, and show precise models.

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Grade 2 Math Units

Unit Plan 10 (Grade 2 Math): Fluency within 100—Efficient Methods

Add and subtract within 100 using place value, properties, and inverse relationships; choose efficient strategies like make-a-ten or compensation and explain why they work.

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Grade 2 Math Units

Unit Plan 9 (Grade 2 Math): Add/Subtract Lengths—Number Line Models

Solve within-100 length word problems by modeling equal-unit jumps on a number line; label endpoints, write matching equations with unknowns, and explain how much longer or shorter with units.

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Grade 2 Math Units

Unit Plan 8 (Grade 2 Math): Length—Measure, Estimate, and Compare

Measure lengths in inches and centimeters with correct tool use and zero alignment; estimate using 1 in/1 cm benchmarks, then compare objects to find how much longer or shorter in standard units.

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Grade 2 Math Units

Unit Plan 7 (Grade 2 Math): Counting & Skip-Counting (5s, 10s, 100s) within 1,000

Skip-count within 1,000 from any start by 5s, 10s, and 100s using hundreds-chart and number-line structure; connect patterns to nickels, dimes, and 5-minute time intervals.

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Grade 2 Math Units

Unit Plan 6 (Grade 2 Math): Place Value to 1,000—Hundreds, Tens, and Ones

Use bundles of tens/hundreds to read–write numbers to 1,000 in standard, word, and expanded form, then compare three-digit numbers with >, =, < using place-value reasoning.

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Grade 2 Math Units

Unit Plan 5 (Grade 2 Math): Rectangular Arrays—Equal Groups as Repeated Addition

Build, label, and count rectangular arrays up to 5×5; write matching repeated-addition equations with equal addends, use skip-counting for efficiency, and preview area with tiles.

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Grade 2 Math Units

Unit Plan 4 (Grade 2 Math): Odd & Even—Structure and Proofs

Even/odd foundations for Grade 2—students model numbers to 20 with pairs, arrays, and ten-frames, write even numbers as doubles (equal addends), and justify claims with simple “because” proofs to build algebraic reasoning.

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Grade 2 Math Units

Unit Plan 3 (Grade 2 Math): One- and Two-Step Word Problems within 100

Model and solve addition and subtraction word problems within 100—unknowns in all positions—using drawings, tape diagrams, and equations; students explain reasoning, choose operations that fit the story, and check answers for sense and accuracy.

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Grade 2 Math Units

Unit Plan 2 (Grade 2 Math): Fluency within 20—Facts, Strategies, and Games

Build addition/subtraction fluency within 20 through make-10, doubles/near-doubles, count on/back, and compensation; students model thinking, choose efficient strategies, and check with inverse or number lines for accurate, confident recall.

Grade 2 Math Units

Unit Plan 1 (Grade 2 Math): Building Our Math Community & Problem-Solving Norms

Launch math discourse, build tens/ones language, and practice measurement tool use; students solve number puzzles, explain strategies, check work, and use rulers with precision.

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Grade 3 Math Units

Unit Plan 36 (Grade 3 Math): Cumulative Synthesis & Exhibition

Apply Grade 3 math across OA, NBT, NF, MD, and G in multi-step tasks; choose efficient strategies, model with graphs/diagrams, and defend solutions with precise units, evidence, and reasoning.

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Grade 3 Math Units

Unit Plan 35 (Grade 3 Math): NBT Power-Up—Rounding, +/– within 1,000, × by 10s

Strengthen Grade 3 place-value skills by rounding to the nearest 10/100, adding and subtracting within 1,000, and multiplying by multiples of 10 using efficient, pattern-based strategies and reasonableness checks.

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Grade 3 Math Units

Unit Plan 34 (Grade 3 Math): Geometry Deep Dive—Attribute Hierarchies

Sort and classify quadrilaterals using precise geometry vocabulary, build attribute hierarchies, and defend always/sometimes/never claims with examples and counterexamples to deepen Grade 3 geometry reasoning.

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Grade 3 Math Units

Unit Plan 33 (Grade 3 Math): Data Displays—Picture/Bar Graphs & Line Plots

Choose and interpret scaled picture graphs, bar graphs, and line plots in Grade 3 math to compare data, answer how-many-more/fewer questions, and write precise comparative statements using clear titles, labels, scales, keys, and units.

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Grade 3 Math Units

Unit Plan 32 (Grade 3 Math): Measurement Megamix—Time, Mass, Volume, Length

Solve real-world Grade 3 measurement problems by modeling elapsed time, mass, volume, and inch-based lengths with timelines, diagrams, and line plots, selecting appropriate tools, labeling units clearly, and checking reasonableness.

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Grade 3 Math Units

Unit Plan 31 (Grade 3 Math): Fractions Synthesis—Benchmarks, Equivalence, Compare

Learn to place fractions on number lines, prove equivalence, and compare using benchmarks and clear symbols to build flexible Grade 3 fraction reasoning.