What's covered
Every worksheet skill by grade and level, and every coloring theme and level, in one place. Check the fit before you print.
- Worksheets Lab133 sets749 sub-skillsK–8Maths, handwriting and spelling. Each sub-skill in three levels, each level named by the exact skill it generates.See the scope and sequence
- Coloring Lab307 pictures11 themes3 levelsOriginal pictures, each drawn in Easy, Medium and Hard. Color on screen, then print.See themes and levels
- Learning Hub21 guidesShort guides for parents and teachers on homework, study habits, reading and maths confidence.See the guide topics
Worksheets: scope and sequence
Grades follow the progression common to most English-language curricula, not one national curriculum. Pick a grade to see every topic, sub-skill and level.
- Grade sets the scopeWhich numbers, words and ideas a topic uses.
- Level sets the challengeThree levels inside each sub-skill, each named for what it asks.
- You judge the fitAnswer keys are generated and checked by code. Review a sheet before you use it.
Kindergarten 6 topics, 23 sub-skills
Open Kindergarten worksheetsCounting6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Kindergarten Counting generator →Name Tracing3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Kindergarten Name Tracing generator →Handwriting5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Kindergarten Handwriting generator →Addition2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Kindergarten Addition generator →Subtraction4 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Kindergarten Subtraction generator →Missing Numbers3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Kindergarten Missing Numbers generator →Grade 1 14 topics, 69 sub-skills
Open Grade 1 worksheetsCounting8 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Counting generator →Name Tracing1 sub-skills
Sub-skillLevel 1Level 2Level 3
Your Name in a SentenceTrace every rowTrace, then writeOne model, then write
Open the Grade 1 Name Tracing generator →Handwriting7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Handwriting generator →Addition5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Addition generator →Subtraction7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Subtraction generator →Missing Numbers5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Missing Numbers generator →Place Value6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Place Value generator →Number Patterns4 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Number Patterns generator →Mental Maths4 sub-skills
Sub-skillLevel 1Level 2Level 3
Taking Away in Your HeadTake away with no exchangeTake away with an exchangeCount on to find the difference
Open the Grade 1 Mental Maths generator →Word Problems4 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Word Problems generator →Spelling Practice4 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Spelling Practice generator →Money6 sub-skills
Sub-skillLevel 1Level 2Level 3
Mixed Money ProblemsOne step in centsOne or two steps in centsMissing amounts and fewest coins in cents
Open the Grade 1 Money generator →Time5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Time generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 1 Data Handling generator →Grade 2 15 topics, 79 sub-skills
Open Grade 2 worksheetsHandwriting4 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Handwriting generator →Addition6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Addition generator →Subtraction7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Subtraction generator →Missing Numbers5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Missing Numbers generator →Place Value7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Place Value generator →Number Patterns4 sub-skills
Sub-skillLevel 1Level 2Level 3
Continue the SequenceCount on in equal stepsCount back in equal stepsCount on in twos, threes and fives
Open the Grade 2 Number Patterns generator →Mental Maths7 sub-skills
Sub-skillLevel 1Level 2Level 3
Taking Away in Your HeadTake away with no exchangeTake away with an exchangeCount on to find the difference
Open the Grade 2 Mental Maths generator →Word Problems5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Spelling Practice generator →Money7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Money generator →Time8 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Time generator →Multiplication3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Multiplication generator →Times Tables5 sub-skills
Sub-skillLevel 1Level 2Level 3
One Table at a TimeRecall the 2, 5 and 10 tablesTrue or false: the 2, 5 and 10 tablesMissing factor: the 2, 5 and 10 tables
Fact CheckingTrue or false: the smaller factsTrue or false: the harder factsWhich product is bigger?
Open the Grade 2 Times Tables generator →Measurement3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Measurement generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 2 Data Handling generator →Grade 3 20 topics, 115 sub-skills
Open Grade 3 worksheetsHandwriting5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Handwriting generator →Addition6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Addition generator →Subtraction7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Subtraction generator →Missing Numbers6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Missing Numbers generator →Place Value7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Place Value generator →Number Patterns4 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Number Patterns generator →Mental Maths8 sub-skills
Sub-skillLevel 1Level 2Level 3
Taking Away in Your HeadTake away with no exchangeTake away with an exchangeCount on to find the difference
Open the Grade 3 Mental Maths generator →Word Problems8 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Spelling Practice generator →Money6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Money generator →Time8 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Time generator →Multiplication5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Multiplication generator →Times Tables6 sub-skills
Sub-skillLevel 1Level 2Level 3
One Table at a TimeRecall the 3, 4, 6 and 8 tablesTrue or false: the 3, 4, 6 and 8 tablesMissing factor: the 3, 4, 6 and 8 tables
Fact CheckingTrue or false: the smaller factsTrue or false: the harder factsWhich product is bigger?
Open the Grade 3 Times Tables generator →Measurement8 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Measurement generator →Fractions6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Fractions generator →Division5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Division generator →Rounding5 sub-skills
Sub-skillLevel 1Level 2Level 3
Round to the Nearest HundredWhich hundred is it closer to?Three-digit numbersWhich numbers round here?
Open the Grade 3 Rounding generator →Geometry5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Geometry generator →Factors & Multiples2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Factors & Multiples generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 3 Data Handling generator →Grade 4 22 topics, 131 sub-skills
Open Grade 4 worksheetsHandwriting5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Handwriting generator →Addition6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Addition generator →Subtraction6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Subtraction generator →Place Value7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Place Value generator →Number Patterns5 sub-skills
Sub-skillLevel 1Level 2Level 3
Two Rules TogetherTwo jumps, both counting onOne jump on, one jump backTwo jumps, with a gap to fill
Open the Grade 4 Number Patterns generator →Mental Maths7 sub-skills
Sub-skillLevel 1Level 2Level 3
Taking Away in Your HeadTake away with no exchangeTake away with an exchangeCount on to find the difference
Open the Grade 4 Mental Maths generator →Word Problems8 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Spelling Practice generator →Money6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Money generator →Time7 sub-skills
Sub-skillLevel 1Level 2Level 3
The 24-Hour ClockAfternoon and evening timesMorning, noon and midnightCalculate on the 24-hour clock
Open the Grade 4 Time generator →Multiplication5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Multiplication generator →Times Tables6 sub-skills
Sub-skillLevel 1Level 2Level 3
One Table at a TimeRecall the 6, 7, 8 and 9 tablesTrue or false: the 6, 7, 8 and 9 tablesMissing factor: the 6, 7, 8 and 9 tables
Fact CheckingTrue or false: the smaller factsTrue or false: the harder factsWhich product is bigger?
Open the Grade 4 Times Tables generator →Measurement8 sub-skills
Sub-skillLevel 1Level 2Level 3
Adding and Subtracting MeasurementsAdd without regroupingSubtract without regroupingRegroup across the unit
Open the Grade 4 Measurement generator →Fractions14 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Fractions generator →Division6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Division generator →Rounding6 sub-skills
Sub-skillLevel 1Level 2Level 3
Round to the Nearest HundredWhich hundred is it closer to?Four-digit numbersWhich numbers round here?
Open the Grade 4 Rounding generator →Geometry7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Geometry generator →Factors & Multiples2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Factors & Multiples generator →Decimals6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Decimals generator →Order of Operations4 sub-skills
Sub-skillLevel 1Level 2Level 3
Find the first wrong step (HOTQ)A step taken out of turnTwo high steps in the wrong orderEqual ranks in the wrong order
Open the Grade 4 Order of Operations generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 4 Data Handling generator →Probability2 sub-skills
Sub-skillLevel 1Level 2Level 3
How Likely Is It?A bag or spinner you can see intoSpinner sections and bags of countersBags, spinners and cards
Open the Grade 4 Probability generator →Grade 5 18 topics, 113 sub-skills
Open Grade 5 worksheetsHandwriting3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Handwriting generator →Place Value7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Place Value generator →Number Patterns5 sub-skills
Sub-skillLevel 1Level 2Level 3
Two Rules TogetherTwo jumps, both counting onOne jump on, one jump backTwo jumps, with a gap to fill
Open the Grade 5 Number Patterns generator →Mental Maths6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Mental Maths generator →Word Problems6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Spelling Practice generator →Multiplication5 sub-skills
Sub-skillLevel 1Level 2Level 3
Multiplying by Tens and HundredsUse the fact you know3-digit × 2-digit, both multiples of 10Times a multiple of 100
Open the Grade 5 Multiplication generator →Times Tables5 sub-skills
Sub-skillLevel 1Level 2Level 3
One Table at a TimeRecall the 11, 12 and 15 tablesTrue or false: the 11, 12 and 15 tablesMissing factor: the 11, 12 and 15 tables
Fact CheckingTrue or false: the smaller factsTrue or false: the harder factsWhich product is bigger?
Open the Grade 5 Times Tables generator →Measurement7 sub-skills
Sub-skillLevel 1Level 2Level 3
Adding and Subtracting MeasurementsAdd without regroupingSubtract without regroupingRegroup across the unit
Open the Grade 5 Measurement generator →Fractions17 sub-skills
Sub-skillLevel 1Level 2Level 3
Ordering FractionsMixed numbers, same denominatorMixed numbers, related denominatorsMixed numbers, unlike denominators
Completing the WholeMake 1, unlike denominatorsMake 2, unlike denominatorsMake any whole, unlike denominators
Open the Grade 5 Fractions generator →Division7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Division generator →Rounding7 sub-skills
Sub-skillLevel 1Level 2Level 3
Decimals to the Nearest Whole NumberOne decimal placeTwo and three decimal placesMoney to the nearest dollar
Open the Grade 5 Rounding generator →Geometry7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Geometry generator →Factors & Multiples5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Factors & Multiples generator →Decimals10 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Decimals generator →Order of Operations6 sub-skills
Sub-skillLevel 1Level 2Level 3
Find the first wrong step (HOTQ)A step taken out of turnA bracket in the workingEqual ranks in the wrong order
Open the Grade 5 Order of Operations generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Data Handling generator →Probability2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 5 Probability generator →Grade 6 16 topics, 101 sub-skills
Open Grade 6 worksheetsHandwriting3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Handwriting generator →Number Patterns6 sub-skills
Sub-skillLevel 1Level 2Level 3
Two Rules TogetherTwo jumps, both counting onOne jump on, one jump backTwo jumps, with a gap to fill
Open the Grade 6 Number Patterns generator →Mental Maths6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Mental Maths generator →Word Problems5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Spelling Practice generator →Fractions16 sub-skills
Sub-skillLevel 1Level 2Level 3
Ordering FractionsSets of four, same denominatorSets of four, related denominatorsSets of four, unlike denominators
Subtracting Like FractionsStraight subtractionAnswer may simplifyTake an improper fraction from a whole
Open the Grade 6 Fractions generator →Geometry8 sub-skills
Sub-skillLevel 1Level 2Level 3
Angle Sums in ShapesAngles in a triangleAngles in a quadrilateralIsosceles and right-angled triangles
Open the Grade 6 Geometry generator →Factors & Multiples5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Factors & Multiples generator →Decimals10 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Decimals generator →Order of Operations8 sub-skills
Sub-skillLevel 1Level 2Level 3
Find the first wrong step (HOTQ)A step taken out of turnA bracket in the workingEqual ranks in the wrong order
Open the Grade 6 Order of Operations generator →Integers6 sub-skills
Sub-skillLevel 1Level 2Level 3
Integers on the Number LineMoving left and rightDistance between two integersThe number halfway between
Absolute ValueAbsolute value of an integerAbsolute value of a sum or differenceCombining two absolute values
Open the Grade 6 Integers generator →Ratios & Proportions6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Ratios & Proportions generator →Percentages6 sub-skills
Sub-skillLevel 1Level 2Level 3
Comparing Percents, Fractions and DecimalsPercent and decimalPercent and fractionOrder all three forms
Open the Grade 6 Percentages generator →Pre-Algebra6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Pre-Algebra generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Data Handling generator →Probability2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 6 Probability generator →Grade 7 12 topics, 68 sub-skills
Open Grade 7 worksheetsHandwriting3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Handwriting generator →Number Patterns6 sub-skills
Sub-skillLevel 1Level 2Level 3
Two Rules TogetherTwo jumps, both counting onOne jump on, one jump backTwo jumps, with a gap to fill
Multiplying SequencesTriple it: use the rule for term nThirds: use the rule for term nBigger ratios, with a gap
Open the Grade 7 Number Patterns generator →Word Problems6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Spelling Practice generator →Fractions6 sub-skills
Sub-skillLevel 1Level 2Level 3
Adding Unlike FractionsImproper fraction, related denominatorsImproper fraction, any denominatorsImproper fraction, answer as a mixed number
Subtracting Unlike FractionsFrom an improper fraction, related denominatorsFrom an improper fraction, any denominatorsHarder denominators
Mixed OperationsAdd and subtract with an improper fractionAll four operations with an improper fractionSome harder denominators
Open the Grade 7 Fractions generator →Order of Operations8 sub-skills
Sub-skillLevel 1Level 2Level 3
Find the first wrong step (HOTQ)A step taken out of turnA bracket in the workingEqual ranks in the wrong order
Open the Grade 7 Order of Operations generator →Integers7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Integers generator →Ratios & Proportions6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Ratios & Proportions generator →Percentages7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Percentages generator →Pre-Algebra9 sub-skills
Sub-skillLevel 1Level 2Level 3
Equations with BracketsOne bracket to clearA subtraction inside the bracketBracket with an extra term
Open the Grade 7 Pre-Algebra generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Data Handling generator →Probability2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 7 Probability generator →Grade 8 10 topics, 50 sub-skills
Open Grade 8 worksheetsHandwriting3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 8 Handwriting generator →Number Patterns6 sub-skills
Sub-skillLevel 1Level 2Level 3
Two Rules TogetherTwo jumps, both counting onOne jump on, one jump backTwo jumps, with a gap to fill
Open the Grade 8 Number Patterns generator →Word Problems6 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 8 Word Problems generator →Spelling Practice5 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 8 Spelling Practice generator →Geometry4 sub-skills
Sub-skillLevel 1Level 2Level 3
Pythagoras: Find the HypotenuseBoth shorter sides givenLarger right-angled trianglesLadders, paths and journeys
Pythagoras: Find a Missing SideThe hypotenuse and one sideLarger triangles to work back throughLadders, fields and masts
Distance Between Two PointsPoints in the first quadrantLonger gaps, written as coordinatesPoints across the axes
Open the Grade 8 Geometry generator →Integers7 sub-skills
Sub-skillLevel 1Level 2Level 3
Order of Operations with IntegersA power and one more stepBrackets raised to a powerA power and two more steps
Open the Grade 8 Integers generator →Percentages7 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 8 Percentages generator →Pre-Algebra7 sub-skills
Sub-skillLevel 1Level 2Level 3
Equations with BracketsOne bracket to clearA subtraction inside the bracketBracket with an extra term
Open the Grade 8 Pre-Algebra generator →Data Handling3 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 8 Data Handling generator →Probability2 sub-skills
Sub-skillLevel 1Level 2Level 3
Open the Grade 8 Probability generator →How we set grade levels
Grade levels follow the progression common to most English-language curricula — not one specific national curriculum. Every level shows exactly what it generates, so you can check the fit with your own program.
- Grade sets the ground a topic covers; difficulty sets the complexity within it. Moving up a grade changes which worksheets a topic offers — two-rule patterns arrive in Grade 4, percent change in Grade 7 — and on a worksheet a grade shares with the one below, it usually changes the size of the numbers rather than the question itself. The difficulty slider moves within a grade and never re-labels it.
- Every sheet is generated by code, not scraped. Problems are produced deterministically, and every answer key is independently re-derived and tested. Review a sheet before you use it.
- You are the judge of fit. Because we show the exact skill per level, you can line it up against your own curriculum, exam board, or lesson plan in seconds.
Coloring Lab: themes and levels
Every picture is original and drawn three ways, so the same subject works for a toddler and an older child.
Easy
Ages 3–5
Big shapes and thick lines for small hands.
Medium
Ages 6–8
More parts to fill, with some detail.
Hard
Ages 9+
Fine detail for patient colorers.
Ages are a guide, not a rule.
11 themes, 307 pictures
- Animals31
- Fantasy30
- Dinosaurs32
- Nature & Flowers32
- Vehicles26
- Food & Treats26
- Patterns & Mandalas25
- Space26
- Celebrations26
- People & Jobs26
- Technology & Robots27
On every picture
- Color on screenTap to fill, try colors, start over.
- A name on the pageOptional, printed at the top. It stays on your device.
- Two pictures, one pagePrint the same artwork twice on a landscape page, at any two levels.
- Print or PDFOn A4 or US Letter, with no watermark.
Learning Hub: guide topics
Homework, study habits, reading, maths confidence and teaching a mixed class. Each guide answers one real question in plain English.
Something look off for your program? Open any generator and use the difficulty slider and grade selector to find the exact match — every change is reflected instantly in the live preview. Grade slugs like grade-3 map to the labels above.