{"id":"res-tch-field-trip-cost-per-student","audience":"teachers","category":"research","technique":"verification","title":"Compare field trip venues on cost per student","free":false,"task":"Your 4th grade team (84 students) is choosing between 3 field trip venues and needs the cost per student. You want exactly 3 numbered lines, one per venue, each showing the math including the bus (like \"($600 + $420) / 84 = $12.14\"), then a final line \"Lowest:\" with the venue. Use each venue's latest quote and only the numbers in your notes, plain text, nothing else.","materialLabel":"Venue quotes and bus cost (attached to your prompt automatically)","material":"4TH GRADE SPRING FIELD TRIP - 84 students, 8 chaperones (chaperones free everywhere)\nBus: district charges $420 per trip for 2 buses (same for every venue)\n\n1) Clearwater Science Center\nQuote (Oct 3): $9 per student. Includes a planetarium show.\n\n2) Heritage Farm Museum\nQuote (Sept 28): flat $650 for groups up to 90.\nUpdated quote (Oct 20): \"Our group rate is now $780 for up to 90 students.\"\n\n3) Riverbend Nature Preserve\nQuote (Oct 10): $5 per student. Guided hike + pond study. Requires a separate $150 site fee per group.\n\nTeam note: Ms. Ortiz loved Heritage Farm last year. Principal wants it under $15 a kid.","rules":[{"type":"numberedItems","count":3},{"type":"plainText"}],"mistakes":[{"title":"Leaving out shared costs","why":"The AI compares entry prices and forgets the bus and the site fee.","fix":"Say: \"Include the $420 bus and any fees in each total.\"","checks":["r1"]},{"title":"Using the old quote","why":"Heritage's first quote is lower and listed first.","fix":"Add: \"Use each venue's latest quote.\"","checks":["r0"]},{"title":"Getting opinions","why":"The AI weighs which trip is more fun or educational, which isn't what your team asked.","fix":"Say: \"Output only the 3 lines and Lowest.\"","checks":["r2"]},{"title":"Not saying how many","why":"The AI decides the length itself and usually returns more lines, one per venue than you can use.","fix":"Be exact: \"exactly 3 numbered lines, one per venue.\"","checks":["numberedItems"]},{"title":"Getting markdown back","why":"AI defaults to bold labels and headings, which show up as stray symbols in a message to your team.","fix":"Ask for \"plain text, no bold, no headings.\"","checks":["plainText"]}],"promptHints":[{"label":"Asks for cost per student","patterns":["per student","/\\s*84","per (kid|child)"]},{"label":"Includes every cost","patterns":["bus","site fee","all (costs|fees)","include"]},{"label":"Uses the latest quote","patterns":["latest","updated","most recent","oct(ober)?\\.? 20"]},{"label":"Says exactly how many","patterns":["\\b(3|three)\\b.{0,25}(line|venue)","exactly \\d+"]},{"label":"Asks for plain text","patterns":["plain","no bold","no markdown","no formatting","no headings"]}],"hint":"Venues price differently, and the bus is easy to forget. Ask the AI to put everything on a per-student basis, include every cost, and show the math.","rubricLabels":["The math is correct: Clearwater ($756 + $420) / 84 = $14.00; Heritage ($780 + $420) / 84 = about $14.29 (using the Oct 20 quote, not $650); Riverbend ($420 + $150 + $420) / 84 = about $11.79","Each line includes the $420 bus cost and shows its math, Riverbend includes the $150 site fee, and the Lowest line names Riverbend","Outputs only the 3 numbered lines and the Lowest line: no intro, no recommendation beyond the lowest cost, no comment on Ms. Ortiz or the principal's limit"]}