Corpus Analytics

Distribution & coverage across the 237 유형 — built statically from the content tree.

By grade

■ take   ■ adapt   ■ drop

Decision breakdown

take 146 · adapt 91 · drop 0

Adapt reasons (localization mismatch flags)

CCSS domain coverage

⚠ 44 types flagged ccss-needs-new-standard — Round-2 backfill backlog (grade 6-8 topics / K-5 subset gaps).

Productization: planned vs actual

237 types with no generator (static-only)

• u1-arrange-cards-count-numbers 2-2
• u1-box-value-range 3-1
• u1-build-and-order-of-operations 3-2
• u1-build-number-from-conditions 4-1
• u1-closest-sum-to-target 3-1
• u1-combined-work-rate 4-2
• u1-compare-digit-by-digit-unknown 4-1
• u1-compare-with-unknown-digit 2-2
• u1-consecutive-integers 3-2
• u1-consecutive-sum 3-1
• u1-cryptarithm-regrouping 3-1
• u1-custom-operator-symbol 4-2
• u1-decompose-into-addition 3-1
• u1-digit-cards-largest-product 3-2
• u1-digit-cards-largest-smallest 3-1
• u1-digit-conditions-find-number 2-2
• u1-estimate-product-inequality 3-2
• u1-fraction-sequence-rule 4-2
• u1-gaps-versus-posts 3-2
• u1-make-amount-with-coins 2-2
• u1-missing-digit-in-product 3-2
• u1-number-cards-largest-mixed 4-2
• u1-number-line-interval-value 4-1
• u1-number-line-locate-compare 4-1
• u1-overlap-subtract 3-1
• u1-overlap-subtract-distance 4-2
• u1-place-value-regrouping 3-1
• u1-rectangle-perimeter 4-2
• u1-regroup-bundles-carry 4-1
• u1-regroup-ten-to-next-place 2-2
• u1-reverse-from-wrong-product 3-2
• u1-skip-count-backward 2-2
• u1-skip-count-by-place-value 4-1
• u1-skip-count-step-size 2-2
• u1-submerged-bar-length 4-2
• u1-sum-and-difference 3-1
• u1-sum-as-middle-times-count 3-2
• u1-thousand-as-ten-hundreds 2-2
• u1-times-ten-shifts-place 4-1
• u1-wrong-calc-inverse 4-2
• u2-adjust-to-zero-remainder 3-2
• u2-clock-hands-angle 4-1
• u2-count-angles-in-figure 4-1
• u2-count-composite-shapes 3-1
• u2-count-isosceles-on-geoboard 4-2
• u2-count-line-segments 3-1
• u2-count-triangles-in-figure 4-2
• u2-cube-views-base-perimeter 3-1
• u2-different-factors-same-product 2-2
• u2-divisible-fill-blanks 3-2
• u2-equal-perimeter-find-side 3-1
• u2-equal-value-bounds-inequality 2-2
• u2-equilateral-properties 4-2
• u2-find-unknown-then-correct 2-2
• u2-folded-triangle-angle 4-2
• u2-gaps-versus-posts-division 3-2
• u2-guess-and-check-legs 2-2
• u2-isosceles-angle-stepwise 4-2
• u2-isosceles-from-radius 4-2
• u2-isosceles-in-polygon 4-2
• u2-line-angle-in-figures 4-1
• u2-long-division-missing-digits 3-2
• u2-multiple-ways-to-count 2-2
• u2-overlap-figure-perimeter 3-1
• u2-pattern-perimeter-nth 3-1
• u2-perimeter-and-tile-count 3-1
• u2-perimeter-by-counting-sides 3-2
• u2-perimeter-from-sides 3-1
• u2-polygon-angle-sum-triangulation 4-1
• u2-properties-of-one-and-zero 2-2
• u2-quadrilateral-angle-sum-360 4-1
• u2-range-conditions-common-number 2-2
• u2-recover-dividend-from-quotient-remainder 3-2
• u2-rectangle-side-single-unknown 3-2
• u2-remainder-less-than-divisor 3-2
• u2-rotation-preserves-angle 4-2
• u2-shape-equations-solve-in-order 2-2
• u2-single-unknown-angle-equation 4-1
• u2-sticks-to-build-shapes 2-2
• u2-straight-angle-180 4-1
• u2-triangle-angle-sum-180 4-1
• u3-arrange-digits-extremize-quotient 4-1
• u3-chain-of-circle-centers-segment 3-2
• u3-closest-decimal-cards 4-2
• u3-common-multiple-divisibility 3-1
• u3-consecutive-naturals-decimal 4-2
• u3-container-weight-difference 4-2
• u3-cryptarithm-multiplication 4-1
• u3-decimal-compare-digit 4-2
• u3-decimal-inequality-blank 4-2
• u3-decimal-inverse-find-number 4-2
• u3-decimal-sum-difference-system 4-2
• u3-decimal-wrong-calc 4-2
• u3-defined-operation-symbol 4-1
• u3-diameter-twice-radius 3-2
• u3-dividend-equals-divisor-times-quotient 3-1
• u3-division-as-repeated-subtraction 3-1
• u3-factor-decomposition-divisibility 4-1
• u3-find-number-meeting-conditions 3-1
• u3-find-total-then-divide 3-1
• u3-fit-circles-in-rectangle 3-2
• u3-gaps-one-fewer-than-objects 2-2
• u3-grid-cut-card-count 2-2
• u3-handspan-from-counts 2-2
• u3-larger-dividend-larger-quotient 3-1
• u3-maximize-remainder 4-1
• u3-more-and-less-find-original 2-2
• u3-multiplicative-comparison 4-1
• u3-objects-and-gaps-spacing 3-1
• u3-overlap-subtract-length 2-2
• u3-overlapping-circles-through-centers 3-2
• u3-perimeter-as-radius-and-straight-parts 3-2
• u3-perimeter-from-circle-centers 3-2
• u3-perimeter-of-touching-circles 3-2
• u3-polygon-perimeter-overlap 4-2
• u3-radius-diameter-from-segments 3-2
• u3-radius-equal-in-one-circle 3-2
• u3-ribbon-around-box 2-2
• u3-side-as-radius-sum-general 3-2
• u3-side-as-radius-sum-triangle 3-2
• u3-side-length-from-cut-pieces 3-1
• u3-smaller-unit-more-counts 2-2
• u3-spacing-interval-count 4-1
• u3-sum-and-difference-two-lengths 2-2
• u3-unify-units-then-compare 2-2
• u3-unit-conversion-simplify 4-1
• u3-unit-rate-value 4-1
• u4-arrange-digits-for-extreme-product 3-1
• u4-auxiliary-parallel-line-angle 4-2
• u4-bouncing-ball-fraction-height 3-2
• u4-compare-hour-then-minute 2-2
• u4-compare-mixed-and-improper-fractions 3-2
• u4-composite-figure-perimeter 4-2
• u4-corresponding-alternate-angles 4-2
• u4-count-shapes-in-figure 4-2
• u4-days-per-month-future-date 2-2
• u4-elapsed-time-between-clocks 2-2
• u4-estimate-product-inequality 3-1
• u4-evaluate-custom-defined-operation 3-1
• u4-even-flips-identity 4-1
• u4-fast-slow-clock 2-2
• u4-find-whole-from-fraction 3-2
• u4-flip-image-overlaps 4-1
• u4-flip-turn-digits-letters 4-1
• u4-fraction-of-a-number 3-2
• u4-fraction-sequence-pattern 3-2
• u4-full-turn-identity 4-1
• u4-make-oclock-then-add 2-2
• u4-mirror-clock-elapsed 2-2
• u4-missing-digits-in-multiplication 3-1
• u4-overlaps-one-fewer-than-strips 3-1
• u4-paper-fold-equal-angles 4-2
• u4-parallelogram-adjacent-angles 4-2
• u4-pattern-rule-as-expression 3-1
• u4-perimeter-path-around-pond 3-1
• u4-perpendicular-right-angle 4-2
• u4-proper-fraction-repeated-subtraction 3-2
• u4-quiz-scoring-right-wrong-counts 3-1
• u4-read-hour-hand-between 2-2
• u4-rectangle-overlap-perimeter 4-2
• u4-reverse-moves-to-original 4-1
• u4-rotation-center-fixed 4-1
• u4-same-numerator-fraction-comparison 3-2
• u4-single-unknown-equation-from-relations 3-1
• u4-undo-operations-to-find-start 3-1
• u4-weekday-repeats-every-seven 2-2
• u5-accumulate-distance-and-time 3-1
• u5-am-pm-arrival-time 3-1
• u5-closest-weight-estimate 3-2
• u5-compare-across-different-scales 4-2
• u5-compare-gap-between-two-lines 4-2
• u5-compare-paths-same-unit 3-1
• u5-complete-line-graph-from-clues 4-2
• u5-constant-speed-distance 3-1
• u5-container-weight-from-changes 3-2
• u5-estimate-intermediate-value 4-2
• u5-fast-slow-clock-drift 3-1
• u5-graph-total-and-difference 2-2
• u5-interpret-many-facts 4-1
• u5-length-sum-difference-with-conversion 3-1
• u5-link-two-graphs 4-1
• u5-net-fill-rate-with-leak 3-2
• u5-read-values-from-line-graph 4-2
• u5-round-up-bundles-for-weight 3-2
• u5-scale-per-gridline 2-2
• u5-scale-reaches-max-value 4-1
• u5-scale-then-complete-graph 2-2
• u5-single-unknown-capacity-equation 3-2
• u5-solve-known-then-fill 4-1
• u5-speed-as-distance-per-time 3-1
• u5-stepwise-from-conditions 2-2
• u5-sum-of-line-graph-values 4-2
• u5-table-graph-cross-complete 2-2
• u5-table-to-graph 4-1
• u5-time-distance-slope-speed 4-2
• u5-time-sum-difference-base-sixty 3-1
• u5-total-capacity-by-adding-water 3-2
• u5-total-equals-sum-of-rows 2-2
• u5-two-bars-per-item 4-1
• u5-two-data-sets-one-graph 2-2
• u5-unit-rate-per-kilogram 3-2
• u5-value-per-grid-square 4-1
• u5-weight-sum-and-difference 3-2
• u6-calendar-grid-relations 4-1
• u6-clock-time-pattern 2-2
• u6-compare-decimals-by-place 3-1
• u6-compare-fractions-same-part 3-1
• u6-complete-addition-multiplication-table 2-2
• u6-constant-sum-pairs 4-1
• u6-convert-table-and-pictograph 3-2
• u6-count-points-lines-faces 4-1
• u6-decimal-place-value-tenths 3-1
• u6-digit-cards-largest-smallest-decimal 3-1
• u6-exterior-angle-sum 4-2
• u6-fraction-as-multiple-of-unit-fraction 3-1
• u6-fraction-of-equal-parts 3-1
• u6-fractions-between-on-number-line 3-1
• u6-growing-block-stack 2-2
• u6-isosceles-triangle-from-diagonal 4-2
• u6-missing-data-from-conditions 3-2
• u6-multiplication-table-symmetry 2-2
• u6-neighbor-difference-rule 4-1
• u6-parallelogram-diagonals-bisect 4-2
• u6-pictograph-symbol-value 3-2
• u6-pictograph-to-table 3-2
• u6-polygon-angle-sum-triangulation 4-2
• u6-remaining-fraction-of-whole 3-1
• u6-repeating-block-sum 2-2
• u6-rule-predicts-result 4-1
• u6-shape-and-color-pattern 2-2
• u6-shape-and-number-rule 4-1
• u6-solve-knowns-then-unknowns 3-2
• u6-square-diagonals-perpendicular-equal 4-2
• u6-tiling-count-distinct-shapes 4-2
• u6-tiling-identify-pieces-and-area 4-2
• u6-total-from-pictograph 3-2
• u6-weekday-cycle-pattern 2-2

Figure coverage

of 124 figured types: 124 have an EN SVG, 0 are PNG-only. Flags: enFigureNeedsRedraw 55 · enUnitsKept 38.

Archetype progression spine

26 of 34 archetypes span ≥2 grades (the progression spine). See progressions →

Grade-span distribution

Largest archetypes

Gap action list (281)