Name the groups before the product

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</style></head><body class="groups"><main><header><p class="kicker">REPRESENTATION LAB / THREE CARDS</p><h1>Name the groups before the product</h1><p>For this activity: first factor = groups; second factor = items in each group. This is a local convention, not a universal notation rule.</p></header><div class="content"><div class="controls"><button type="button" id="m1">M1 · Trays</button><button type="button" id="m2">M2 · Rows</button><button type="button" id="m3">M3 · Unequal trays</button></div><h2 id="card-title"></h2><div id="objects"></div><p id="object-list" class="facts"></p><section class="panel "><h2>Describe this arrangement</h2><div class="fields"><label for="groups">How many groups?<input id="groups" type="number" value="" min="1" step="1"></label><label for="each">How many in each? Or choose unequal<input id="each" type="text" value="" ></label><label for="total">Total counters<input id="total" type="number" value="" min="0" step="1"></label></div><button type="button" id="unequal">Groups are unequal</button><label for="reason">My reason / expression<textarea id="reason" rows="3"></textarea></label><button type="button" id="check">Check representation</button><div class="result" id="feedback" aria-live="polite">No attempt checked.</div><details id="teacher"><summary>Teacher reference</summary><p id="key"></p></details><button type="button" id="reset">Reset all cards</button></section></div><footer><p>Original fictional teaching example. Entries are temporary and are cleared on reload; no responses are sent or saved.</p></footer></main><script>
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