{"id":"vis-hs-winter-concert-poster","audience":"high-school","category":"image-video","track":"visual","technique":"grounding","title":"Get a concert poster image with the corrected date","free":false,"task":"You're making the band's winter concert poster and want the art from Gemini. Get Claude to write one paste-ready prompt, plain text, under 100 words: a prompt paragraph and a last line starting \"Avoid:\". It must say vertical 2:3, allow only the text \"WINTER CONCERT\" and \"DEC 12\" (the corrected date), show the instruments your band actually has, and keep the bottom third empty for details.","materialLabel":"The brief (attached to your prompt automatically)","material":"Lincoln High Band - Winter Concert poster\n\nDate: Dec 5. CORRECTION from Mr. Patel, Nov 10: the concert moved to Dec 12 because the gym floor is being refinished.\nTime: 7pm. Place: school gym. Free, donations for the music trip.\n\nOur band: flutes, clarinets, trumpets, trombones, a tuba, and percussion (snare drum, bass drum, glockenspiel). We do NOT have strings or a piano this year.\n\nLook: snowy night, music notes drifting like snowflakes, instruments glowing softly, deep blue and silver.\n\nBottom part of the poster: we print time, place and the donation info there ourselves.\n\nIdeas from section leaders:\n- \"Put the famous movie snowman on it!\"\n- \"Add a grand piano in the middle, it looks fancy.\"\n- \"Write the whole program list.\"\n\nPrinted 11 x 17, portrait.","rules":[{"type":"maxWords","max":100},{"type":"plainText"}],"mistakes":[{"title":"Using the old date","why":"The notes say Dec 5 first, and the AI may use it.","fix":"Add: \"The only text is WINTER CONCERT and DEC 12.\"","checks":["r1"]},{"title":"Fancy instruments you don't have","why":"The AI adds a grand piano or violins because they look elegant.","fix":"List your instruments and add \"Avoid: piano, strings.\"","checks":["r2"]},{"title":"No room for details","why":"The art fills the poster, so the time and place don't fit.","fix":"Add: \"Vertical 2:3, bottom third empty.\"","checks":["r0"]},{"title":"Write-up with headings","why":"The AI explains poster design.","fix":"Add: \"Output only the prompt and Avoid line.\"","checks":["plainText","maxWords"]}],"promptHints":[{"label":"Sets the shape","patterns":["2\\s*:\\s*3","vertical|portrait"]},{"label":"Uses the corrected date","patterns":["DEC 12"]},{"label":"Limits the text","patterns":["only (text|words)","WINTER CONCERT"]},{"label":"Lists real instruments","patterns":["trumpet","clarinet","tuba"]},{"label":"Adds an Avoid line","patterns":["avoid"]}],"hint":"Posters get the date wrong when the notes have a correction. Give the current date as the only text, list your real instruments, and leave room for details.","rubricLabels":["States vertical 2:3 and keeps the bottom third empty for details","Allows only the text 'WINTER CONCERT' and 'DEC 12' (not Dec 5, no time, place or program)","Shows only the band's real instruments (such as flute, clarinet, trumpet, trombone, tuba, drums), with no piano or strings, and ends with an 'Avoid:' line"]}