Education tools
79 focused tools, ready to use in your browser.
Weighted Shortest Path Workbench
Inspect a shortest-path witness and distances from one source in your own nonnegative weighted graph.
EducationSignal Convolution and Correlation Workbench
Calculate bounded discrete linear convolution or cross-correlation with explicit sample indices and cropping.
EducationSudoku Solution Inspector
Check9×9 Sudoku givens, find a solution witness and inspect uniqueness within a bounded search.
EducationChemical Equation Workbench
Balance a neutral molecular equation exactly and inspect an atom-by-atom conservation witness.
EducationSupplied Dictionary Word Ladder Solver
Find a shortest one-letter substitution path using only your supplied equal-length word list.
EducationHistorical SM-2 Review Schedule Workbench
Apply an explicit historical SM-2 transition to local card-state records and preserve the previous state.
EducationRubric Scorecard Builder
Combine original criterion descriptors and explicit level ratings into reviewable weighted scorecards.
EducationRound-Robin Fixture Generator
Create all-pairs rounds with explicit odd-participant byes and an optional mirrored second leg.
EducationBoolean Truth Table Workbench
Enumerate bounded propositional truth tables and find real counterexamples to formula equivalence.
EducationEducational Huffman Coding Workbench
Build a deterministic UTF8-byte Huffman table or decode bits with an explicit checked prefix codebook.
EducationOriginal Word Search Puzzle Generator
Place your own ASCII word list into a bounded puzzle grid with a checked answer key and explicit omitted words.
EducationExact Linear Recurrence Workbench
Generate an integer sequence from your own finite-order recurrence and inspect exact indexed terms without expression evaluation.
EducationRestricted Integer Partition Workbench
Count unordered integer partitions with part-size, distinctness and exact-length constraints, then inspect a bounded example list.
EducationCombination and Ordered Selection Ranking
Rank or recover a combination or ordered selection by exact zero-based lexicographic index without enumerating all objects.
EducationExplicit Answer Key Scorecard
Score a CSV answer sheet against your own accepted strings with exact point totals and visible blank policies.
EducationOriginal Practice Worksheet Builder
Create an escaped print worksheet and reviewable answer key from original short-answer or single-choice questions.
EducationSupplied Dictionary Letter Tile Finder
Find words that fit your explicit letter rack and blank tiles using only an original supplied dictionary.
EducationFIRST, FOLLOW and LL(1) Table Workbench
Compute nullable symbols, FIRST/FOLLOW sets and real predictive-table conflicts for your explicit token grammar.
EducationExplicit Epsilon-NFA Workbench
Simulate finite token strings or build a reachable deterministic transition table from a supplied epsilon-NFA.
EducationForward Propositional Derivation Checker
Check explicit local inference steps and their earlier-line references without treating a plausible conclusion as a proof.
EducationPrintable Graph and Ruled Paper Generator
Create original square, dotted, ruled or polar paper as a physical-size SVG or vector PDF.
EducationCloze Passage Practice Builder
Create a printable gap passage from author-selected Unicode ranges, with an optional word bank and separate teacher key.
EducationMatching Pairs Worksheet Builder
Lay out your own matching pairs with a shuffled answer column and an optional separate teacher mapping.
EducationConstrained Team Roster Builder
Find a complete roster with exact team sizes and explicit pairs that must remain apart, or return a bounded feasibility result.
EducationFinite Decision-tree Rollback
Evaluate a finite chance-and-decision tree with exact conditional values, explicit costs and retained best-branch ties.
EducationStrict Preference Stable Matching
Construct and verify a stable one-to-one matching from complete two-sided rankings, with either side proposing.
EducationRanked Ballot Method Comparison
Compare plurality, Borda, instant runoff and pairwise Condorcet results from your weighted complete preference ballots.
EducationSeeded Knockout Bracket Builder
Build a source-linked knockout bracket with transparent seed slots, byes and pending winner dependencies.
EducationOriginal Word-grid Bingo Cards
Create distinct custom word grids and a caller checklist from your own term list, with an optional free center.
EducationTwo-sided Study Card Sheets
Lay out original front/back study cards with explicit reflected back coordinates and a calibration-ready placement manifest.
EducationOriginal Sequence Strip Activity
Shuffle your ordered statements into cut-out strips and optionally export the exact teacher ordering on a separate page.
EducationOriginal Category Sorting Activity
Create original term cards and category labels with a shuffled student layout and optional separate teacher classification.
EducationInterlinear Gloss Alignment Workbench
Review word and morpheme-separator alignment and export safe original interlinear teaching examples when the declared checks pass.
EducationProtein Cleavage Rule Workbench
Enumerate bounded peptides from explicit residue-boundary rules, length filters and missed declared cuts.
EducationGlobal Pairwise Sequence Alignment
Export one deterministic end-to-end sequence alignment, exact integer score and explicit gap-operation witness.
EducationOriginal Crossword Sheet Builder
Publish your own connected letter/block grid with checked numbering, complete clues and an independently omitted solution page.
EducationRuby Reading Practice Sheets
Export original text with explicit ruby readings or practice blanks and a genuinely omitted optional teacher-reading page.
EducationSmall Boolean Minimization Workbench
Turn a small 0/1/X output specification into a minimum-literal two-level Boolean form with complete truth-row witnesses.
EducationNonogram Clue Solution Inspector
Check supplied monochrome run clues and givens, retaining verified solutions while separating uniqueness from a bounded search stop.
EducationArithmetic Card Target Workbench
Find one exact four-card arithmetic expression for an entered target, with card-use and fraction witnesses rather than evaluated input code.
EducationAssessment Objective Blueprint
Map authored item points to learning objectives, verify allocation conservation and export target-versus-actual coverage with item witnesses.
EducationDiscounted Action Policy Workbench
Evaluate or improve actions in a small supplied discounted decision process, with exact policy values and Bellman optimality witnesses.
EducationBeta–Binomial Evidence Workbench
Update an entered beta prior with success and failure counts, then inspect exact future-count probabilities.
EducationBalanced Two-level Experiment Effects
Decode complete balanced high/low experiments into exact main effects, interactions and pure-error witnesses.
EducationBranching Story Outline Workbench
Check an original unconditional passage-and-choice outline for missing links, unreachable passages and routes to explicit endings, then export safe linked HTML.
EducationOriginal Substitution Cryptogram Sheets
Create an original letter-substitution puzzle with selected hints, a working alphabet and an explicitly separate optional teacher key.
EducationPlain GIFT Question Bank Inspector
Review an actual UTF-8 GIFT question file under a strict plain-text subset, retaining original question records and explicit answer-key evidence.
EducationGPA Course Repeat Ledger
Track named course attempts across terms with an entered grade scale, repeat policy and exact cumulative GPA.