Illustrative Mathematics K–5 · Grade 4
Grade 4
Pick a unit. Learn it step by step, then practice it with a game. Each one lines up with a unit from class.
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Unit 1
Factors & Multiples
Find multiples on a number line, build rectangles to find factor pairs, sort primes and composites, and solve the Locker Problem.
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Unit 2
Fraction Equivalence & Comparison
Shade fraction strips, find fractions on number lines, make equivalent fractions by splitting and grouping parts, and compare and order fractions.
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Unit 3
Extending Operations to Fractions
Make equal groups of fractions, add and subtract fractions and mixed numbers, read line plots in eighths of an inch, and add tenths to hundredths.
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Unit 4
From Hundredths to Hundred-thousands
Write decimals to hundredths, build numbers up to 1,000,000, compare and round them, and add and subtract with the standard algorithm.
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Unit 5
Multiplicative Comparison & Measurement
Compare with “times as many” on tape diagrams, change big units into small ones, and find perimeters.
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Unit 6
Multiplying & Dividing Multi-digit Numbers
Grow patterns, multiply with area diagrams, partial products, and the standard algorithm, and divide with base-ten blocks and partial quotients.
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Unit 7
Angles & Angle Measurement
Tell lines, rays, and segments apart, find parallel and perpendicular lines, measure and draw angles with a protractor, and find unknown angles.
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Unit 8
Properties of Two-dimensional Shapes
Name triangles and quadrilaterals by their sides and angles, find lines of symmetry, and use what a shape has to find lengths.
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Unit 9
Putting It All Together
Review the year: fractions, the standard algorithms and division, comparison problems, and estimating.