DeskMade

The school Halloween party candy fund — $240 collected over two weeks from eight classrooms — has vanished from the locked supply closet. Whoever took it did not guess the amount. They calculated it: the exact number of candy bags the fund could purchase at bulk price, the exact cost per bag, the exact total. Every piece of working found at the scene shows precise multiplication and division. No estimation. No rounding. Someone who uses these skills every single day did this deliberately. The Ma

The winter charity collection jar — holding three-quarters of the school's fundraising goal after four weeks of donations — has been tampered with. The fraction records have been deliberately altered to hide how much was taken. Equivalent fractions were swapped to redirect funds across categories. Comparison signs between donation amounts were reversed. Addition totals were adjusted by exactly the amounts needed to avoid triggering an audit. Whoever did this understands fractions precisely. The

The school's end-of-year Maths Achievement Trophy has been stolen — but the trophy was just a cover. Someone wanted the school's complete maths performance data. This self-checking Mixed Review mystery is the grand finale of the DeskMade Math Whodunnit series, covering all five CCSS Grade 3-5 domains in one forty-minute investigation. The Math Whodunnit: The Grand Heist is Case M-06, the series finale. Each of the five stations targets a different domain: Operations and Algebraic Thinking, Numbe

The original blueprint for the school garden has been replaced with a forgery — mislabelled quadrilaterals, systematically wrong angles, and incorrect area calculations. This self-checking Geometry mystery gives your Grades 3-5 students real geometry work: shapes and properties, angle classification, lines and symmetry, and polygon area, all inside a mystery they genuinely want to solve. The Math Whodunnit: The Forged Blueprint is Case M-05 in the DeskMade Math Whodunnit series. Five suspects ha

Dr. Patel's science fair measurement records were tampered with overnight — and someone who understands units, conversions, and data did it. This self-checking Measurement and Data mystery gives your Grades 3-5 students real measurement work: units, conversion, perimeter, area, and line plots, inside a story that makes the maths matter. The Math Whodunnit: The Tampered Experiment is Case M-04 in the DeskMade Math Whodunnit series. Students work through five evidence stations across the school la

A shipment of 35,872 maths workbooks vanished from the school loading dock — and someone used place value to hide the evidence. This self-checking Number and Base Ten mystery gives your Grades 3-5 students real place value, rounding, multi-digit addition and subtraction, and powers of ten work inside a story that keeps them reading right to the final reveal. The Math Whodunnit: The Stolen Shipment is Case M-02 in the DeskMade Math Whodunnit series. Five suspects had access to the warehouse the n

Someone stole Dr. Chen's formula notebook — and the only way to find out who is to solve the maths. This self-checking Operations and Algebraic Thinking mystery gives your Grades 3-5 students real multiplication, division, multi-step problems, and pattern work wrapped in a story they actually want to finish. The Math Whodunnit: The Stolen Formula is Case M-01 in the DeskMade Math Whodunnit series. Students read a short crime scenario at each of five stations, solve four multiple-choice questions

Your students are cracking a real math mystery — and they don't even know they're reviewing Operations and Algebraic Thinking. This free sampler is the first case in the DeskMade Math Whodunnit series, and it gives your students just enough of the experience to leave them wanting more. The Math Whodunnit series turns CCSS math skills into a story-driven detective investigation. Students read a short crime scenario, solve four math questions per station, decode a code word from their answers, and