Diagnose. Then revise.

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<body class="fragments"><main><header><p class="kicker">Formal-prose sentence activity · three core cards + unscored imperative</p><h1>Diagnose. Then revise.</h1></header><div class="content"><div class="hero"><p>A subject and verb do not always make an independent sentence.</p><p>Classify the fixed card. A free repair can have more than one suitable answer.</p></div><section><h2>Read the card</h2><div class="controls"><button type="button" id="f1" aria-pressed="true">F1 · because clause</button><button type="button" id="f2" aria-pressed="false">F2 · folder phrase</button><button type="button" id="c1" aria-pressed="false">C1 · courier sentence</button><button type="button" id="imperative" aria-pressed="false">Unscored imperative</button></div><blockquote id="sentence">Because the studio door was locked.</blockquote><div class="controls"><button type="button" id="fragment" aria-pressed="false">Fragment</button><button type="button" id="complete" aria-pressed="false">Complete</button><button type="button" id="check" >Check classification</button></div><p id="result" class="result" role="status" aria-live="polite">Unanswered. Choose Fragment or Complete.</p><div class="two-col"><label for="repair">Your repair or retain unchanged (teacher review)<textarea id="repair" rows="3"></textarea></label><label for="reason">Explain the grammatical evidence<textarea id="reason" rows="3"></textarea></label></div><div class="controls"><button type="button" id="reveal" >Sample repair</button><button type="button" id="reset" >Reset</button></div><p id="sample" class="sample" hidden></p></section><section><h2>Use the right criterion</h2><p>Formal-prose independence is the declared task. Journalistic and fictional style may intentionally use fragments.</p><p>F1 has a verb but is dependent; F2 lacks a main verb; C1 is already independent. Close the window. is a complete imperative with understood you.</p><p class="note">A sample repair is not an exact-string grading key. Teacher review considers grammatical and semantic suitability. No arbitrary prose checker or saved learner record.</p></section></div><footer><p>Local example only. Controls send nothing and save no changes; reloading restores the sample. Keep your revised sentence separately.</p></footer><noscript>Enable JavaScript to use this interactive example.</noscript></main>
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const cards=[{text:'Because the studio door was locked.',key:'fragment',why:'Dependent because-clause despite subject and verb.',sample:'We waited outside because the studio door was locked. Adds an independent clause and attaches the reason.'},{text:'The blue folders beside the printer.',key:'fragment',why:'Noun phrase with no finite main verb.',sample:'The blue folders were beside the printer. Adds finite main verb were.'},{text:'The courier placed the packet on the desk.',key:'complete',why:'Independent statement: subject the courier, finite main verb placed.',sample:'Retain unchanged: The courier placed the packet on the desk.'},{text:'Close the window.',key:'complete',why:'Complete imperative with understood you as subject. Unscored challenge.',sample:'Retain unchanged: Close the window. Understood you supplies the imperative subject.'}];let card=0,choice='';function choose(i){card=i;choice='';mark(['#f1','#f2','#c1','#imperative'],['#f1','#f2','#c1','#imperative'][i]);mark(['#fragment','#complete'],'');put('#sentence',cards[i].text);put('#result','Unanswered. Choose Fragment or Complete.');q('#repair').value='';q('#reason').value='';q('#sample').hidden=true;put('#sample','');}['#f1','#f2','#c1','#imperative'].forEach((id,i)=>on(id,()=>choose(i)));['fragment','complete'].forEach(c=>on('#'+c,()=>{choice=c;mark(['#fragment','#complete'],'#'+c);put('#result','Classification changed. Check the grammatical evidence.');}));on('#check',()=>put('#result',!choice?'Unanswered. Choose Fragment or Complete.':(choice===cards[card].key?'Classification matches. ':'Revise classification. ')+cards[card].why));on('#reveal',()=>{q('#sample').hidden=false;put('#sample','One sample, not the only suitable wording: '+cards[card].sample);});['#repair','#reason'].forEach(id=>on(id,()=>put('#result','Attempt edited. Recheck classification; free repair and reason need teacher review.'),'input'));on('#reset',()=>choose(0));
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