Mystery
Detective case: gather clues; make a claim; defend it.
21 tools
Book Detectives
Look at a book cover and pages to find the title, author, illustrator and main topic like clues at a crime scene.
Grade 1 · English Language Arts · MysteryContext Clue Hunt
A silly word replaces a real one in a sentence; use clues to guess what it means before the reveal.
Grade 4 · English Language Arts · MysteryEyewitness vs Reporter
Compare a firsthand diary entry and a secondhand article about the same storm; spot what each knows and misses.
Grade 5 · English Language Arts · MysteryInference Interrogation
A short mystery story; answer questions by quoting the exact line that proves your inference.
Grade 7 · English Language Arts · MysteryHistory or Fiction?
Compare a historical fiction excerpt with primary sources from the same era; flag where the author...
Grade 11 · English Language Arts · MysterySatire Decoder
Read public-domain satire like "A Modest Proposal"; separate what is said from what is meant.
Grades 9-12 · English Learners · MysteryHistorian's Toolkit
Analyze a historian's argument with sentence frames for causation and evaluation.
Grades 3-5 · Health and PE · MysteryLabel Detective
Compare snack labels to find hidden sugar and sodium; solve which snack fits the goal.
Grades 9-12 · Health and PE · MysteryHealth Claim Checker
Investigate viral health claims; check sources, studies and motives to decide what's valid.
Grade 4 · Computer Science · MysteryNetwork Detective
Investigate why devices can't connect; learn wired vs wireless and authentication vs authorization.
Grades 6-8 · Computer Science · MysteryMisleading Charts
Investigate charts that mislead; fix the axes, scales and labels to show the truth.
Grades 6-12 · World Languages and ASL · MysteryDetective del Pasado
Solve a mystery by telling what happened with the preterite and imperfect.
Grade 2 · Math · MysteryTreasure Map Steps
Follow a pirate's two-part clues; each step's answer is a coordinate on the map to the next clue.
Grade 3 · Math · MysteryPattern Detective
Odd number patterns in the multiplication table hide a culprit's alibi; explain the pattern to close the case.
Grade 9 · Math · MysteryUnit Detective
Real headlines with impossible numbers; use dimensional analysis to find which claims fall apart.
Grade 12 · Math · MysteryFair Dice Investigation
Is the casino's die loaded? Collect counts and run chi-square to decide; then test whether a slope is real.
Grade 4 · Science · MysteryCanyon Reader
Read rock layers in a canyon wall to reconstruct what happened there, layer by layer.
Grade 5 · Science · MysteryMystery Powders
Identify unknown powders by testing with water, vinegar and iodine; mixing some makes something new.
Grade 10 · Science · MysterypH Detective
Identify household mystery liquids with indicators and pH probes; neutralize a spill safely.
Grade 12 · Science · MysteryWatershed Detective
Trace a river's pollution back to its sources with water tests; propose and test solutions.
Grade 2 · Social Studies · MysteryResource Detective
Trace everyday objects (pencil, T-shirt, juice) back to the natural resources they came from.