Interactive Prefix and Suffix Activities: Explain This Word’s Change

Select the code and use your copy shortcut. Changes in this preview are temporary.

<!doctype html>
<html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>Interactive Prefix and Suffix Activities: Explain This Word’s Change</title><style>*{box-sizing:border-box}body{margin:0;color:var(--ink,#233342);background:var(--bg,#eef2f3);font:17px/1.6 system-ui,sans-serif}main{max-width:980px;margin:auto;padding:clamp(16px,4vw,38px)}h1{font:700 clamp(30px,5vw,49px)/1.12 Georgia,serif;margin:10px 0 20px;max-width:800px}h2{font-size:24px;line-height:1.3;margin:0 0 15px}h3{font-size:19px;margin:12px 0}p{margin:0 0 16px}.eyebrow{font-weight:750;letter-spacing:.08em;text-transform:uppercase;font-size:16px}header{padding:10px 0 25px;border-bottom:3px solid var(--accent,#24586d);margin-bottom:24px}.lede{font-size:20px;max-width:760px}.panel{background:var(--paper,#fff);padding:clamp(18px,3vw,28px);border:1px solid var(--line,#c6d1d8);border-radius:12px;margin:20px 0}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.grid>*{min-width:0}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin:16px 0}.stack>*{margin:12px 0}button{font:700 17px/1.4 system-ui,sans-serif;cursor:pointer;color:white;background:var(--accent,#24586d);border:2px solid var(--accent,#24586d);border-radius:7px;padding:11px 17px;max-width:100%;overflow-wrap:anywhere}button.secondary{background:transparent;color:var(--ink,#233342)}button[aria-pressed=true]{box-shadow:inset 0 0 0 3px #fff;outline:2px solid var(--ink,#233342)}button:disabled{opacity:.55;cursor:default}input,textarea,select{font:17px/1.5 system-ui,sans-serif;color:inherit;background:white;border:1px solid #778591;padding:10px 12px;border-radius:6px;max-width:100%;width:100%;min-width:0}input[type=checkbox]{width:22px;height:22px}textarea{min-height:110px;resize:vertical}label{display:block;font-weight:700;margin:12px 0 7px}button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #aa3d70;outline-offset:4px}.result{padding:18px;border-left:5px solid var(--accent,#24586d);background:var(--soft,#e5eff2);white-space:pre-wrap;overflow-wrap:anywhere;margin:20px 0}.result:empty{display:none}.hint{font-size:16px;color:var(--muted,#435968)}table{border-collapse:collapse;width:100%;table-layout:fixed;margin:16px 0}th,td{text-align:left;vertical-align:top;overflow-wrap:anywhere;padding:12px 8px;border-bottom:1px solid var(--line,#c6d1d8)}caption{text-align:left;font-weight:750;margin:8px 0}details{padding:18px;border:1px dashed #7b8b96;margin:20px 0}summary{cursor:pointer;font-weight:750}pre{font:16px/1.6 ui-monospace,monospace;white-space:pre-wrap;overflow-wrap:anywhere;background:#162735;color:#f5f8fa;padding:18px;border-radius:8px}canvas,svg{display:block;max-width:100%;height:auto}footer{margin:28px 0;font-size:16px}.badge{font-weight:750;color:var(--accent,#24586d)}.metric{font:700 38px/1.3 Georgia,serif}.board{display:grid;gap:5px;max-width:440px;margin:20px auto}.board button{padding:7px;min-height:45px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}@media(max-width:560px){.grid{grid-template-columns:1fr}main{padding:16px}th,td{padding:10px 5px}.row button{flex-grow:1}.metric{font-size:32px}}
:root{--bg:#f2eaf1;--paper:#fffafd;--accent:#79516c;--soft:#efdfeb;--ink:#472d40}.worddisplay{font:700 44px Georgia,serif}.context{font:23px/1.6 Georgia,serif}</style></head><body><main><header><p class="eyebrow">Word workshop · The pack family</p><h1>Interactive Prefix and Suffix Activities: Explain This Word’s Change</h1><p class="lede">Again, person and reversal are three different meaning changes.</p><p class="hint">Original fictional sample. Changes last only while this page remains open.</p></header><section class="panel"><div class="row"><button id="f1" type="button">F1 · repack</button><button id="f2" type="button">F2 · packer</button><button id="f3" type="button">F3 · unpack</button></div><h2 id="word" class="worddisplay"></h2><p id="context" class="context"></p><p id="meaning" class="result"></p><label for="base">Base</label><input id="base"><h3>Affix</h3><div class="row"><button id="re" type="button" aria-pressed="false">re-</button><button id="un" type="button" aria-pressed="false">un-</button><button id="er" type="button" aria-pressed="false">-er</button></div><h3>Position</h3><div class="row"><button id="begin" type="button" aria-pressed="false">Beginning</button><button id="end" type="button" aria-pressed="false">Ending</button></div><label for="reason">Meaning change and context clue (teacher-reviewed)</label><textarea id="reason"></textarea><div class="row"><button id="check" type="button">Check parts</button><button id="reset" type="button" class="secondary">Reset</button></div><p id="result" class="result" role="status"></p></section><footer>Explain how repack and unpack change the action before naming their prefixes.</footer></main><script>
(()=>{'use strict';const $=id=>document.getElementById(id);
let entry='f1',affix='',position='';const data={f1:['repack','Rae packed the kit yesterday. Today she will repack it.','Pack again.','re','begin'],f2:['packer','The packer puts items in boxes.','Selected meaning: a person who packs.','er','end'],f3:['unpack','Please unpack the kit.','Remove packed contents; reverse packing.','un','begin']};function clear(){$('result').textContent='';}function refresh(){const d=data[entry];$('word').textContent=entry.toUpperCase()+' · '+d[0];$('context').textContent=d[1];$('meaning').textContent=d[2];$('base').value='';$('reason').value='';affix='';position='';for(const k of ['re','un','er','begin','end'])$(k).setAttribute('aria-pressed','false');clear();}for(const k of Object.keys(data))$(k).addEventListener('click',()=>{entry=k;refresh();});for(const k of ['re','un','er'])$(k).addEventListener('click',()=>{affix=k;for(const x of ['re','un','er'])$(x).setAttribute('aria-pressed',String(x===k));clear();});for(const k of ['begin','end'])$(k).addEventListener('click',()=>{position=k;for(const x of ['begin','end'])$(x).setAttribute('aria-pressed',String(x===k));clear();});for(const k of ['base','reason'])$(k).addEventListener('input',clear);$('check').addEventListener('click',()=>{const base=$('base').value.trim().toLowerCase(),d=data[entry];$('result').textContent=!base||!affix||!position?'Complete base, affix and position first.':base==='pack'&&affix===d[3]&&position===d[4]?'Fixed parts match: '+d[0]+' uses base pack, '+(affix==='er'?'-er':affix+'-')+' at the '+(position==='begin'?'beginning':'ending')+'. Meaning explanation needs teacher review.':'Review the base, added part and its position in '+d[0]+'.';});$('reset').addEventListener('click',()=>{entry='f1';refresh();});refresh();
})();
</script></body></html>