MathJewels content atlas
Every MathJewels problem, in its place.
58 published problems across 431 targetable nodes (441 total ontology nodes). Explore the coverage map and find connected skills. Uncovered nodes remain visible so the atlas also shows where new challenges can extend the collection.
Coverage matrix
| Domain | Kindergarten | Grade 1 | Grade 2 | Grade 3 | Grade 4 | Grade 5 | Grade 6 | Grade 7 | Grade 8 | Grade 9 | Grade 10 | Grade 11 | Grade 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number and quantity | 1 | 0 | 5 | 3 | 0 | 3 | 1 | 0 | 2 | 3 | 3 | 6 | 6 |
| Operations and computation | 1 | 0 | 5 | 11 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Ratios, rates, and proportional reasoning | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| Algebraic structure and equations | 0 | 0 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 3 | 8 | 9 |
| Functions and change | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 2 |
| Geometry and spatial reasoning | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Measurement and units | 0 | 0 | 0 | 4 | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Data, statistics, and probability | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Discrete mathematics and logic | 0 | 0 | 0 | 2 | 2 | 2 | 1 | 1 | 1 | 3 | 3 | 1 | 3 |
| Modeling and applied quantitative literacy | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Reasoning, proof, and mathematical practice | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Calculus and continuous change | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
Problem inventory
| ID | Problem | Status | Grade | Domain | Topic | Skills | Flags |
|---|---|---|---|---|---|---|---|
| 0 | The Zero Routethe-zero-route · rev 6 | published | grade-11 grade-12 | ALG | MJ.STR.ALG.SYSTEMS_LINEAR_ALGEBRA | MJ.ALG.MATRIX.LINEAR_TRANSFORMATION MJ.ALG.MATRIX.SYSTEMS_CONNECTION | 0 |
| 1 | The Machine That Repeats Forevermachine-that-repeats-forever · rev 2 | published | grade-6 grade-7 grade-8 | FUN | MJ.STR.FUN.TRANSFORM_COMPOSE_INVERSE | MJ.FUN.ITERATION.IDEMPOTENT_STABILIZATION | 0 |
| 2 | The Necklace Codenecklace-code · rev 6 | published | grade-3 | DIS | MJ.STR.DIS.PATTERNS_INVARIANTS | MJ.DIS.CYCLE.POSITION.REPEATING MJ.DIS.CYCLE.CATEGORY_COUNT | 0 |
| 3 | Steve’s Big Digsteves-big-dig · rev 5 | published | grade-5 | MEA NUM DAT | MJ.STR.MEA.VOLUME_SURFACE_AREA MJ.STR.NUM.FRACTIONS MJ.STR.DAT.PROBABILITY | MJ.MEA.VOLUME.RECTANGULAR_PRISM.FORMULA MJ.NUM.FRACTION.ONE_TENTH.OF_QUANTITY MJ.PROB.EXPECTED_VALUE.NONWHOLE.INTERPRET | 0 |
| 4 | The Chest Room Splitchest-room-split · rev 4 | published | grade-3 | OPS | MJ.STR.OPS.MULTIPLICATION_DIVISION MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.OPS.DIV.INTERPRET.QUOTIENT MJ.OPS.MULT.INTERPRET.PRODUCT MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 5 | Fence the Wheat Farmfence-the-wheat-farm · rev 4 | published | grade-3 | MEA OPS | MJ.STR.MEA.AREA_PERIMETER MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.MEA.AREA.RECTANGLE.FORMULA MJ.MEA.PERIMETER.POLYGON MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 6 | The Stained-Glass Windowstained-glass-window · rev 6 | published | grade-3 | NUM OPS | MJ.STR.NUM.FRACTIONS MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.NUM.FRACTION.A_OVER_B MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 7 | Race the Sunsetrace-the-sunset · rev 6 | published | grade-3 | MEA | MJ.STR.MEA.LENGTH_TIME_MONEY_MASS | MJ.MEA.TIME.MINUTE.ELAPSED | 0 |
| 8 | The Ore Cart Graphore-cart-picture-graph · rev 5 | published | grade-3 | DAT OPS | MJ.STR.DAT.EARLY_DATA_DISPLAYS MJ.STR.OPS.MULTIPLICATION_DIVISION MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.DAT.SCALED.GRAPH MJ.OPS.MULT.INTERPRET.PRODUCT MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 9 | Nurse Joy’s Poké Ball Packsnurse-joys-poke-ball-packs · rev 3 | published | grade-2 | NUM OPS | MJ.STR.NUM.PLACE_VALUE_NUMERATION MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.NUM.PLACE_VALUE.COMPOSE_DECOMPOSE.1000 MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 10 | Rotom’s Pokédex Rectanglerotoms-pokedex-rectangle · rev 7 | published | grade-2 | NUM OPS | MJ.STR.NUM.PLACE_VALUE_NUMERATION MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.NUM.PLACE_VALUE.HUNDRED_CHART.STRUCTURE MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 11 | The Infinite Factorization Glitchinfinite-factorization-glitch · rev 2 | published | grade-8 grade-9 grade-10 | NUM | MJ.STR.NUM.NUMBER_THEORY | MJ.NUM.FACTORIZATION.UNITS_ASSOCIATES | 0 |
| 12 | The Ironclad’s Hidden Rest Siteironclads-hidden-rest-site · rev 4 | published | grade-2 | NUM OPS | MJ.STR.NUM.PLACE_VALUE_NUMERATION MJ.STR.OPS.MULTIPLICATION_DIVISION | MJ.NUM.NUMBER_LINE.WHOLE.100 MJ.OPS.DOUBLE_HALVE.WHOLE_NUMBER | 0 |
| 13 | Lakitu’s Hidden Boost Settingmarios-last-unreachable-checkpoint · rev 4 | published | grade-3 | NUM OPS | MJ.STR.NUM.PLACE_VALUE_NUMERATION MJ.STR.NUM.NUMBER_THEORY MJ.STR.OPS.MULTIPLICATION_DIVISION MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.NUM.NUMBER_LINE.WHOLE.100 MJ.NUM.PARITY.EVEN_ODD MJ.OPS.MULT.INTERPRET.PRODUCT MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 14 | The Fire-and-Frost Dragon Bridgefire-and-frost-dragon-bridge · rev 3 | published | grade-5 | NUM OPS GEO | MJ.STR.NUM.COUNTING_CARDINALITY MJ.STR.NUM.PLACE_VALUE_NUMERATION MJ.STR.OPS.FOUNDATIONS MJ.STR.GEO.SHAPES_SPACE | MJ.NUM.COUNT.ONE_TO_ONE MJ.NUM.COUNT.CARDINALITY MJ.NUM.COUNT.OBJECTS.20 MJ.NUM.COMPARE.GROUPS MJ.OPS.COMPOSE_DECOMPOSE.WITHIN_5 MJ.GEO.POSITION.DESCRIBE | 0 |
| 15 | Firefly Jarsfive-firefly-jars · rev 3 | published | grade-k | NUM OPS | MJ.STR.NUM.COUNTING_CARDINALITY MJ.STR.NUM.PLACE_VALUE_NUMERATION MJ.STR.OPS.FOUNDATIONS | MJ.NUM.COUNT.ONE_TO_ONE MJ.NUM.COUNT.CARDINALITY MJ.NUM.COUNT.OBJECTS.20 MJ.NUM.COMPARE.GROUPS MJ.OPS.COMPOSE_DECOMPOSE.WITHIN_5 | 0 |
| 17 | Corner Courtyardcorner-courtyard · rev 3 | published | grade-3 | MEA | MJ.STR.MEA.AREA_PERIMETER | MJ.MEA.AREA.RECTANGLE.FORMULA | 0 |
| 19 | Pen Nib’s First Movepen-nibs-first-move · rev 5 | published | grade-3 | OPS | MJ.STR.OPS.MULTIPLICATION_DIVISION | MJ.OPS.DOUBLE_HALVE.WHOLE_NUMBER | 0 |
| 20 | The Defect’s 100th Orbdefects-100th-orb · rev 4 | published | grade-3 | DIS | MJ.STR.DIS.PATTERNS_INVARIANTS | MJ.DIS.CYCLE.POSITION.REPEATING | 0 |
| 21 | Neow’s Counterexampleneows-every-hand-claim · rev 3 | published | grade-3 | OPS | MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 22 | Jar Jar’s Ruination Rulejar-jars-ruination-rule · rev 2 | published | grade-5 | NUM | MJ.STR.NUM.FRACTIONS | MJ.NUM.FRACTION.ONE_TENTH.OF_QUANTITY | 0 |
| 23 | Grogu’s Force Sortgrogus-force-sort · rev 4 | published | grade-2 grade-3 | GEO | MJ.STR.GEO.SHAPES_SPACE | MJ.GEO.POSITION.DESCRIBE | 0 |
| 27 | The Knight’s Missing Numbersknights-missing-numbers · rev 2 | published | grade-4 | DIS | MJ.STR.DIS.COMBINATORICS | MJ.DIS.COUNT.SYSTEMATIC | 0 |
| 28 | Knightmareknightmare · rev 3 | published | grade-6 grade-7 | DIS | MJ.STR.DIS.COMBINATORICS | MJ.DIS.COUNT.SYSTEMATIC | 0 |
| 33 | One Step Past Omegaone-step-past-omega · rev 2 | published | grade-10 grade-11 grade-12 | ALG | MJ.STR.ALG.ALGEBRAIC_STRUCTURES | MJ.ALG.STRUCTURE.BINARY_OPERATION | 0 |
| 34 | Least Action Lableast-action-lab · rev 2 | published | grade-7 | ALG | MJ.STR.ALG.EXPRESSIONS | MJ.ALG.EXPRESSION.EVALUATE | 0 |
| 35 | Rook’s Halfway Signalrooks-halfway-signal · rev 2 | published | grade-9 grade-10 | DIS | MJ.STR.DIS.ALGORITHMS_RECURSION | MJ.DIS.RECURRENCE.RECURSION | 0 |
| 36 | The Orbit of ithe-orbit-of-i · rev 7 | published | grade-10 grade-11 | NUM | MJ.STR.NUM.EXTENDED_SYSTEMS | MJ.NUM.COMPLEX.ARITHMETIC | 0 |
| 37 | The Safe Zonethe-safe-zone · rev 2 | published | grade-9 grade-10 | DIS | MJ.STR.DIS.ALGORITHMS_RECURSION | MJ.DIS.RECURRENCE.RECURSION | 0 |
| 38 | The Last Safe Positive Real Numbermandelbrot-positive-real-endpoint · rev 2 | published | grade-10 grade-11 | ALG | MJ.STR.ALG.EXPRESSIONS | MJ.ALG.EXPRESSION.REWRITE.PURPOSE | 0 |
| 39 | How Far East Can the Mandelbrot Set Go?how-far-east-mandelbrot · rev 1 | published | grade-11 grade-12 | NUM ALG | MJ.STR.NUM.EXTENDED_SYSTEMS MJ.STR.ALG.EXPRESSIONS | MJ.NUM.COMPLEX.ARITHMETIC MJ.ALG.EXPRESSION.REWRITE.PURPOSE | 0 |
| 40 | U + Me = Us: The Screen Testu-plus-me-equals-us · rev 1 | published | grade-4 grade-5 | DIS | MJ.STR.DIS.COMBINATORICS | MJ.DIS.COUNT.SYSTEMATIC | 0 |
| 41 | Action Between Framesaction-between-frames · rev 2 | published | grade-12 | CALC | MJ.STR.CALC.INTEGRALS_FTC MJ.STR.CALC.LIMITS_CONTINUITY | MJ.CALC.INTEGRAL.ACCUMULATION_AREA MJ.CALC.LIMIT.CONCEPT | 0 |
| 43 | The Fullest Gallery Casefullest-gallery-case · rev 1 | published | grade-3 | OPS NUM | MJ.STR.OPS.ADDITION_SUBTRACTION MJ.STR.NUM.PLACE_VALUE_NUMERATION | MJ.OPS.ADD_SUB.FLUENT.WITHIN_1000 MJ.NUM.COMPARE.THREE_DIGIT | 0 |
| 44 | Rook's Gallery Recordrooks-gallery-record · rev 1 | published | grade-2 grade-3 | OPS ALG | MJ.STR.OPS.ADDITION_SUBTRACTION MJ.STR.ALG.FOUNDATIONS | MJ.OPS.ADD_SUB.REPRESENT MJ.ALG.EQUALITY.MEANING | 0 |
| 45 | Jules's Nested Workshop Notejules-nested-workshop-note · rev 1 | published | grade-4 grade-5 | ALG | MJ.STR.ALG.EXPRESSIONS | MJ.ALG.EXPRESSION.GROUPING_SYMBOLS | 0 |
| 46 | The Observatory's Inside-Out Signalobservatory-inside-out-signal · rev 1 | published | grade-10 grade-11 grade-12 | FUN | MJ.STR.FUN.TRANSFORM_COMPOSE_INVERSE | MJ.FUN.COMPOSE MJ.FUN.INVERSE | 0 |
| 47 | The Museum Displaymuseum-display · rev 4 | published | grade-3 | OPS | MJ.STR.OPS.MULTIPLICATION_DIVISION MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.OPS.MULT.INTERPRET.PRODUCT MJ.OPS.DIV.INTERPRET.QUOTIENT MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 48 | Pairing Packetspairing-packets · rev 3 | published | grade-2 | NUM | MJ.STR.NUM.NUMBER_THEORY | MJ.NUM.PARITY.EVEN_ODD | 0 |
| 49 | The Oran Berry Passing Circleberry-passing-circle · rev 5 | published | grade-2 | OPS NUM | MJ.STR.OPS.MULTIPLICATION_DIVISION MJ.STR.NUM.NUMBER_THEORY MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.OPS.DOUBLE_HALVE.WHOLE_NUMBER MJ.NUM.PARITY.EVEN_ODD MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 50 | One Knob, Infinitely Many Historiesone-knob-many-histories · rev 2 | published | grade-12 | CALC | MJ.STR.CALC.DERIVATIVES MJ.STR.CALC.INTEGRALS_FTC | MJ.CALC.DERIVATIVE.APPLICATION MJ.CALC.INTEGRAL.ACCUMULATION_AREA | 0 |
| 51 | The Dangerous-ers’ Drop-Line Testdangerous-ers-safe-jump-test · rev 1 | published | grade-3 | OPS | MJ.STR.OPS.ADDITION_SUBTRACTION | MJ.OPS.ADD_SUB.ONE_TWO_STEP.WITHIN_100 | 0 |
| 54 | Jules and the Crooked Shadow Screenjules-crooked-shadow-screen · rev 2 | published | grade-3 grade-4 | MEA | MJ.STR.MEA.AREA_PERIMETER | MJ.MEA.AREA_PERIMETER.DISTINGUISH MJ.MEA.PERIMETER.POLYGON MJ.MEA.AREA.UNIT_SQUARE | 0 |
| 55 | Steve’s Chestful Challengesteves-bigger-dig · rev 1 | published | grade-5 | MEA OPS | MJ.STR.MEA.VOLUME_SURFACE_AREA MJ.STR.OPS.MULTIPLICATION_DIVISION MJ.STR.OPS.MULTIOPERATION | MJ.MEA.VOLUME.UNIT_CUBE MJ.MEA.VOLUME.RECTANGULAR_PRISM.FORMULA MJ.OPS.MULT.STANDARD_ALGORITHM.MULTIDIGIT MJ.OPS.DIV.UP_TO_4_BY_2 MJ.OPS.FOUR_OPERATIONS.MULTISTEP.REMAINDER | 0 |
| 56 | The Ouroboros Bindingthe-ouroboros-binding · rev 4 | published | grade-11 grade-12 | DIS NUM | MJ.STR.DIS.ALGORITHMS_RECURSION MJ.STR.NUM.NUMBER_THEORY MJ.STR.DIS.COMBINATORICS | MJ.DIS.RECURRENCE.RECURSION MJ.NUM.MODULAR.ARITHMETIC MJ.DIS.PIGEONHOLE.INTUITIVE | 0 |
| 57 | Make the Calculation Plan Visiblemake-the-calculation-plan-visible · rev 1 | published | grade-5 | ALG | MJ.STR.ALG.EXPRESSIONS | MJ.ALG.EXPRESSION.GROUPING_SYMBOLS | 0 |
| 59 | The Midnight Hollowthe-midnight-hollow · rev 2 | published | grade-6 | ALG RAT NUM | MJ.STR.ALG.FOUNDATIONS MJ.STR.RAT.PERCENT MJ.STR.NUM.FRACTIONS | MJ.ALG.PATTERN.ARITHMETIC.EXPLAIN MJ.RAT.PERCENT.PER_HUNDRED MJ.NUM.FRACTION.MULT.SCALING_EFFECT | 0 |
| 111 | The Missing Rungmissing-rung · rev 2 | published | grade-8 grade-9 | NUM | MJ.STR.NUM.EXPONENTS_NOTATION | MJ.NUM.EXPONENT.INTEGER.PROPERTIES | 0 |
| 261 | Shedletsky’s Self-Checking Formula Cabinetshedletskys-suspicious-formula-cabinet · rev 6 | published | grade-12 | ALG NUM FUN CALC DIS MEA DAT | MJ.STR.ALG.SYSTEMS_LINEAR_ALGEBRA MJ.STR.NUM.EXTENDED_SYSTEMS MJ.STR.FUN.FAMILIES MJ.STR.CALC.DERIVATIVES MJ.STR.DIS.COMBINATORICS MJ.STR.CALC.INTEGRALS_FTC MJ.STR.MEA.UNITS_CONVERSION MJ.STR.DAT.PROBABILITY MJ.STR.CALC.LIMITS_CONTINUITY MJ.STR.DIS.PATTERNS_INVARIANTS | MJ.ALG.MATRIX.OPERATIONS MJ.NUM.VECTOR.ARITHMETIC MJ.FUN.LOGARITHM.DEFINITION MJ.NUM.COMPLEX.ARITHMETIC MJ.CALC.DERIVATIVE.RULES MJ.DIS.COUNT.PERMUTATION_COMBINATION MJ.CALC.ANTIDERIVATIVE.RULES MJ.MEA.UNIT_CONVERSION.RATIO_REASONING MJ.PROB.EXPECTED_VALUE.DECISION MJ.CALC.LIMIT.CONCEPT MJ.DIS.INVARIANT.OVERLAPPING_CHECKS.LOCATE_ERROR | 0 |
| 404 | 404: The Address That Survivedthe-page-that-proves-itself-missing · rev 12 | published | grade-5 | DIS | MJ.STR.DIS.LOGIC_PROOF | MJ.DIS.LOGIC.ELIMINATION | 0 |
| 1111 | The Empty Arrangementempty-arrangement · rev 2 | published | grade-8 grade-9 grade-10 | DIS | MJ.STR.DIS.COMBINATORICS | MJ.DIS.COUNT.PERMUTATION_COMBINATION | 0 |
| 11111 | Four Ways Back to Onefour-ways-back-to-one · rev 2 | published | grade-9 grade-10 grade-11 grade-12 | NUM | MJ.STR.NUM.NUMBER_THEORY | MJ.NUM.MODULAR.ARITHMETIC | 0 |
| 111111 | Can There Be Two Ones?can-there-be-two-ones · rev 2 | published | grade-9 grade-10 grade-11 grade-12 | ALG | MJ.STR.ALG.ALGEBRAIC_STRUCTURES | MJ.ALG.STRUCTURE.BINARY_OPERATION | 0 |
| 1111111 | The Circle That Returnscircle-that-returns · rev 2 | published | grade-11 grade-12 | NUM ALG | MJ.STR.NUM.EXTENDED_SYSTEMS MJ.STR.ALG.ALGEBRAIC_STRUCTURES | MJ.NUM.COMPLEX.POLAR MJ.ALG.STRUCTURE.GROUP_AXIOMS_SYMMETRY | 0 |
| 11111111 | The Same Equation, Different Worldssame-equation-different-worlds · rev 2 | published | grade-11 grade-12 | ALG NUM | MJ.STR.ALG.SYSTEMS_LINEAR_ALGEBRA MJ.STR.NUM.NUMBER_THEORY | MJ.ALG.MATRIX.OPERATIONS MJ.NUM.MODULAR.ARITHMETIC | 0 |
| 111111111 | Everything Points Hereeverything-points-here · rev 2 | published | grade-11 grade-12 | ALG | MJ.STR.ALG.CATEGORY_THEORY | MJ.ALG.CATEGORY.TERMINAL_UNIQUE_ISOMORPHISM MJ.ALG.CATEGORY.TERMINAL_OBJECT | 0 |
| 1111111111 | Two Kinds of Onetwo-kinds-of-one · rev 2 | published | grade-12 | ALG | MJ.STR.ALG.CATEGORY_THEORY | MJ.ALG.CATEGORY.MONOIDAL_UNIT MJ.ALG.CATEGORY.NATURAL_TRANSFORMATION | 0 |
| 11111111111 | The Truth Inside Onetruth-inside-one · rev 2 | published | grade-12 | DIS | MJ.STR.DIS.CATEGORICAL_LOGIC | MJ.DIS.CATEGORICAL_LOGIC.HEYTING_NEGATION MJ.DIS.CATEGORICAL_LOGIC.PRESHEAF_GLOBAL_TRUTH_VALUES | 0 |