{"id":9431,"date":"2025-05-19T08:00:00","date_gmt":"2025-05-18T23:00:00","guid":{"rendered":"https:\/\/chicodori.net\/?p=9431"},"modified":"2026-10-16T18:53:41","modified_gmt":"2026-10-16T09:53:41","slug":"%e3%83%81%e3%82%b3%e3%83%a9%e3%83%83%e3%83%81%e3%80%8c%e6%92%83%e3%81%a6%ef%bc%81%e5%b0%8f%e6%95%b0%e3%83%90%e3%82%b9%e3%82%bf%e3%83%bc%e3%82%ba%e3%80%8d","status":"publish","type":"post","link":"https:\/\/chicodori.net\/?p=9431","title":{"rendered":"\u30c1\u30b3\u30e9\u30c3\u30c1\u300c\u6483\u3066\uff01\u5c0f\u6570\u30d0\u30b9\u30bf\u30fc\u30ba\u300d"},"content":{"rendered":"<style>\r\n\r\n\/* cd-lesson v1 \u2014 shared presentation. 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h3,.cd-chicoratch .cd-content h4{font-size:19px!important}\r\n.cd-chicoratch .cd-content .wp-block-spacer{height:22px!important}\r\n.cd-chicoratch .cd-content .wp-block-image{margin:20px auto}\r\n.cd-chicoratch .cd-content img{max-width:100%;height:auto}\r\n.cd-chicoratch .cd-content .wp-block-separator{border-color:var(--cd-border);margin:22px 0}\r\n.cd-chicoratch .cd-content .wp-block-button__link{font-size:18px;border-radius:24px;line-height:1.6}\r\n.cd-chicoratch .cd-content iframe[src*=\"scratch.mit.edu\/projects\/\"]{display:block;width:485px;max-width:100%;height:auto;aspect-ratio:485\/402;margin:18px auto;border:0}\r\n.cd-chicoratch .cd-content iframe:not([src*=\"scratch.mit.edu\/projects\/\"]){max-width:100%}\r\n.cd-chicoratch .cd-content table{font-size:16px}.cd-chicoratch .cd-content .wp-block-table{overflow-x:auto}\r\n.cd-chicoratch .cd-lead p{font-size:18px!important;line-height:1.85;margin:0;color:var(--cd-ink)!important;text-align:left}\r\n.cd-chicoratch 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svg{display:block;width:1180px;height:310px;max-width:none}.cdr-route .cdr-scroll text{font-family:'UD Digi Kyokasho N-B',Meiryo,sans-serif;font-weight:bold;fill:#222}.cdr-route .cdr-scroll a:hover .cdr-station{fill:#ffd16b;stroke:#222}.cdr-route .cdr-scroll a[aria-current=true] .cdr-station{fill:#fff;stroke:#222;stroke-width:4}.cdr-route .cdr-scroll a[aria-current=true] text{fill:var(--cdr-color)}.cdr-route .cdr-help{text-align:right;font-size:14px;color:#737373;margin:8px 0 0}.cdr-route .cdr-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;margin:20px 0}.cdr-route .cdr-grade{padding:0 0 8px 16px;border-left:6px solid var(--cdr-color)}.cdr-route .cdr-grade h3{font-size:19px;margin:0 0 8px}.cdr-route .cdr-grade a{display:block;font-size:17px;padding:9px 0;color:#333;text-decoration:none}.cdr-route .cdr-grade a:before{content:'';display:inline-block;width:12px;height:12px;border:2px solid var(--cdr-color);border-radius:50%;background:#fff137;margin-right:8px}.cdr-route .cdr-grade a[aria-current=true]{text-decoration:underline;font-weight:bold}.cdr-route .cdr-here{display:inline-block;font-size:13px;border-radius:10px;padding:1px 7px;background:#fff1aa;color:#3b3422}.cdr-route .cdr-info{margin-top:22px;padding:20px;border:1px solid #e2d9b6;border-radius:14px;background:#fffdf5;scroll-margin:24px}.cdr-route .cdr-info h3{font-size:21px;line-height:1.5;margin:0 0 12px}.cdr-route .cdr-info-label{font-size:14px;color:#666;margin:0 0 6px}.cdr-route .cdr-info-text{font-size:16px;line-height:1.9;margin:0 0 16px}.cdr-route .cdr-material,.cdr-route .cdr-pdf{display:inline-block;background:#fff1b2;border:1px solid #d9c164;border-radius:24px;padding:10px 20px;color:#363328;text-decoration:none;font-size:17px;font-weight:bold}.cdr-route .cdr-material:hover,.cdr-route .cdr-pdf:hover{background:#ffe78b;color:#252629}.cdr-route .cdr-downloads{border-top:1px solid #eee;margin-top:30px;padding-top:22px}.cdr-route .cdr-other{display:flex;flex-wrap:wrap;gap:12px 22px;margin-top:22px;font-size:15px}.cdr-route .cdr-other a{color:#555}.cdr-route a:focus-visible,.cdr-route button:focus-visible,.cdr-route .cdr-scroll:focus-visible{outline:3px solid #2284a4;outline-offset:3px}.cdr-route .cdr-pending{font-size:15px;color:#666}@media(max-width:900px){.cdr-route .cdr-tabs{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:500px){.cdr-route .cdr-tab{font-size:15px}.cdr-route .cdr-title{font-size:21px}.cdr-route .cdr-modes button{font-size:13px;padding:8px}.cdr-route .cdr-jump{gap:7px}.cdr-route .cdr-jump span{width:100%}.cdr-route .cdr-jump button{flex:1;min-width:44px;padding:7px 6px}.cdr-route .cdr-cards{grid-template-columns:1fr}.cdr-route .cdr-info{padding:16px}.cdr-route .cdr-info h3{font-size:20px}}\r\n.cdr-route .cdr-scroll a,.cdr-route .cdr-scroll a:hover,.cdr-route .cdr-scroll a:focus,.cdr-route .cdr-scroll a text{text-decoration:none!important}\r\n\r\n\/* \u6559\u6750\u3042\u308a\u30fb\u6e96\u5099\u4e2d *\/\r\n.cdr-legend{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;margin:12px 0;font-size:15px;color:#444}.cdr-legend span{display:inline-flex;align-items:center;gap:7px}.cdr-legend i{display:inline-block;width:19px;height:19px;border:2px solid #766b3b;border-radius:50%;background:#fff137}.cdr-legend .cdr-empty{background:#fff;border:2px dashed #8b8b8b}.cdr-route .cdr-scroll a.cdr-ready .cdr-station{fill:#fff137}.cdr-route .cdr-scroll a.cdr-waiting .cdr-station{fill:#fff;stroke:#888;stroke-dasharray:3 2}.cdr-route .cdr-scroll a.cdr-waiting text{fill:#666}.cdr-route .cdr-scroll a[aria-current=true] .cdr-station{stroke:#222;stroke-width:4}.cdr-route .cdr-scroll a[aria-current=true] text{font-weight:bold}.cdr-route .cdr-scroll a.cdr-waiting .cdr-station-status{fill:#666;font-weight:normal}.cdr-route .cdr-grade a.cdr-waiting:before{background:#fff;border-style:dashed;border-color:#888}.cdr-status-badge{display:inline-block;font-size:12px;line-height:1.5;margin-left:8px;padding:2px 7px;border-radius:8px;background:#fff4bb;color:#514723}.cdr-waiting .cdr-status-badge{background:#f1f1f1;color:#666}.cdr-availability{font-size:14px;color:#665a34;margin:0 0 8px;font-weight:bold}\r\n.cdr-route .cdr-connections{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 20px}.cdr-route .cdr-connections a{display:block;max-width:100%;border:1px solid #d9dddf;border-radius:10px;background:#fff;padding:8px 12px;color:#315c6b;font-size:16px;font-weight:bold;line-height:1.6;text-decoration:none}.cdr-route .cdr-connections a,.cdr-route .cdr-connections a small{text-decoration:none!important}.cdr-route .cdr-connections a:hover{background:#eef7fa;border-color:#82aab8}.cdr-route .cdr-connections small{display:block;font-size:14px;font-weight:normal;color:#555}.cdr-route .cdr-connections-title{width:100%;margin:0 0 1px;font-size:14px;color:#666}\r\n.cdr-route .cdr-scroll .cdr-branch-target:hover circle{fill:#ffe179;stroke:#222}.cdr-route .cdr-scroll .cdr-branch a:hover rect[rx]{fill:#fff8d4}.cdr-route .cdr-scroll .cdr-branch-line{pointer-events:none}\r\n\/* \u7b97\u6570\u8a18\u4e8b\u306e\u95a2\u9023\u5b66\u7fd2\u30a8\u30ea\u30a2\u3092\u3072\u3068\u307e\u3068\u307e\u308a\u306b\u3059\u308b *\/\r\n.cdr-route.cdr-math-route{padding:22px;border:2px solid #ded9e5;border-radius:20px;background:#fff;box-shadow:0 4px 0 #f1eef5}\r\n.cdr-route.cdr-math-route .cdr-intro{margin:0 0 8px;font-size:23px;font-weight:800;line-height:1.6;color:#42454c}\r\n.cdr-route.cdr-math-route .cdr-intro-help{margin:0 0 20px;font-size:14px;color:#687078;line-height:1.8}\r\n.cdr-route.cdr-math-route .cdr-bar{padding:17px 18px;border:1px solid #d8cde4;border-left:8px solid var(--cdr-color);border-radius:13px;background:#f4eff9;flex-wrap:wrap;gap:12px 18px;margin:0 0 18px}\r\n.cdr-route.cdr-math-route h2.cdr-title{font-size:24px!important;font-weight:800;line-height:1.6;color:#44334f;margin:0!important;padding:0!important;background:none!important;border:0!important}\r\n.cdr-route.cdr-math-route .cdr-modes{border:2px solid #b6a8c4;border-radius:10px;background:#fff}\r\n.cdr-route.cdr-math-route .cdr-modes button{padding:9px 13px;font-size:14px;font-weight:700;color:#51455d;background:#fff}\r\n.cdr-route.cdr-math-route .cdr-modes button[aria-pressed=true]{background:#4b375b;color:#fff}\r\n@media(max-width:600px){.cdr-route.cdr-math-route{padding:16px 12px;border-radius:16px}.cdr-route.cdr-math-route .cdr-bar{padding:14px 12px;border-left-width:6px}.cdr-route.cdr-math-route .cdr-intro{font-size:21px}.cdr-route.cdr-math-route h2.cdr-title{font-size:22px!important}}\r\n\r\n<\/style><div class=\"cdr-route cdr-math-route\" id=\"cdr-route-1\"><p class=\"cdr-intro\">\u95a2\u9023\u3059\u308b\u9805\u76ee\u3092\u5b66\u7fd2\u3057\u3088\u3046<\/p><p 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type=\"button\" data-grade=\"2\">2\u5e74<\/button><button type=\"button\" data-grade=\"3\">3\u5e74<\/button><button type=\"button\" data-grade=\"4\">4\u5e74<\/button><button type=\"button\" data-grade=\"5\">5\u5e74<\/button><button type=\"button\" data-grade=\"6\">6\u5e74<\/button><\/div><div class=\"cdr-scroll\" tabindex=\"0\" aria-label=\"\u8def\u7dda\u56f3\u3002\u5de6\u53f3\u306b\u30b9\u30af\u30ed\u30fc\u30eb\u3067\u304d\u307e\u3059\"><\/div><p class=\"cdr-help\">\u5de6\u53f3\u306b\u52d5\u304b\u305b\u307e\u3059 \u2194<\/p><\/div><div class=\"cdr-cards\" hidden><\/div><section class=\"cdr-info\" id=\"cdr-route-1-info\" aria-labelledby=\"cdr-route-1-info-title\" hidden><h3 class=\"cdr-info-title\" id=\"cdr-route-1-info-title\" tabindex=\"-1\"><\/h3><p class=\"cdr-availability\"><\/p><a class=\"cdr-material\">\u6559\u6750\u3092\u898b\u308b \u2192<\/a><p class=\"cdr-pending\" hidden>\u6559\u6750\u3078\u306e\u30ea\u30f3\u30af\u306f\u6e96\u5099\u4e2d\u3067\u3059\u3002<\/p><nav class=\"cdr-connections\" aria-label=\"\u3064\u306a\u304c\u308b\u8def\u7dda\" hidden><\/nav><p class=\"cdr-info-label\">\u304a\u3046\u3061\u306e\u65b9\u3078<\/p><p class=\"cdr-info-text\"><\/p><\/section><noscript><p>\u5358\u5143\u306e\u6559\u6750\u306f\u3053\u3061\u3089\u304b\u3089\u958b\u3051\u307e\u3059\u3002<\/p><ul><li><a href=\"https:\/\/chicodori.net\/?page_id=267#10made\">1\u5e74 \u767e\u3088\u308a\u5927\u304d\u3044\u6570<\/a><\/li><li><a href=\"https:\/\/chicodori.net\/?page_id=267#junban\">1\u5e74 \u306a\u3093\u3070\u3093\u3081<\/a><\/li><li><a href=\"https:\/\/chicodori.net\/?page_id=313#bignum\">2\u5e74 \u4e00\u4e07\u307e\u3067\u306e\u6570<\/a><\/li><li><a href=\"https:\/\/chicodori.net\/?page_id=816#bignum\">3\u5e74 \u4e00\u5104\u307e\u3067\u306e\u6570<\/a><\/li><li><a href=\"https:\/\/chicodori.net\/?page_id=2408#bignum\">4\u5e74 \u5104\u30fb\u5146<\/a><\/li><li><a href=\"https:\/\/chicodori.net\/?page_id=2408#approximate\">4\u5e74 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u=unitMap.get(id);if(!u)return;q('.cdr-info-title').textContent=u.grade+'\u5e74\u3000'+u.label;q('.cdr-info-text').textContent=u.note;q('.cdr-availability').textContent=available(u)?'\u6559\u6750\u3042\u308a':'\u6559\u6750\u306f\u6e96\u5099\u4e2d';const link=q('.cdr-material');link.hidden=!available(u);if(available(u))link.href=u.url;else link.removeAttribute('href');q('.cdr-pending').hidden=available(u);const connections=u.connections||[],nav=q('.cdr-connections');nav.hidden=!connections.length;nav.innerHTML=connections.length?'<p class=\"cdr-connections-title\">\u3064\u306a\u304c\u308b\u8def\u7dda<\/p>'+connections.map(t=>'<a href=\"https:\/\/chicodori.net\/?page_id=9757&amp;station='+encodeURIComponent(t.id)+'\" data-transfer=\"'+E(t.id)+'\">'+E(t.routeName)+'\u3078 \u2192<small>'+t.grade+'\u5e74 '+E(t.label)+'<\/small><\/a>').join(''):'';q('.cdr-info').hidden=false;all('[data-unit]').forEach(a=>{if(a.dataset.unit===id)a.setAttribute('aria-current','true');else 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source=unitMap.get(ids[0]),target=source?.connections?.find(t=>t.id===ids[1]);if(source&&target)byRoute.set(target.route,{source,target});});if(current&&current.route===row.id){byRoute.clear();(current.connections||[]).forEach(target=>byRoute.set(target.route,{source:current,target}));}if(['measurement','plane'].includes(row.id))(row.branches||[]).forEach(b=>byRoute.set(b.target.route,{source:b.source,target:b.target}));return Array.from(byRoute.values()).sort((a,b)=>branchElbow(row,b)-branchElbow(row,a));}\r\nfunction branchSourceX(row,source){if(Number.isFinite(source.x))return source.x;const cell=row.cells[source.grade-1],index=cell.findIndex((v,i)=>source.id===(v[2]||row.id+'-'+source.grade+'-'+(i+1))),widths=row.cells.map(c=>Math.max(190,c.length*50)),offset=widths.slice(0,source.grade-1).reduce((a,b)=>a+b,0);return offset+widths[source.grade-1]\/cell.length*(index+.5);}\r\nfunction branchElbow(row,branch){return 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branches=branchLinks(row).filter(b=>!(row.id==='measurement'&&b.target.id==='relations-5-2')&&!(row.id==='relations'&&b.target.id==='measurement-3-3')&&!(['decimal','fraction'].includes(row.id)&&b.target.route==='numbers')),svg=q('.cdr-scroll svg');if(!svg)return;const count=branches.length,height=count?(row.id==='measurement'?350:330+count*115):310,mapWidth=Number(svg.getAttribute('viewBox').split(' ')[2]);svg.setAttribute('viewBox','0 0 '+mapWidth+' '+height);svg.style.height=height+'px';svg.querySelectorAll('path[stroke=\"#e7e7e7\"]').forEach(p=>p.setAttribute('d',p.getAttribute('d').replace('V300','V'+(height-15))));let markup='',previousElbow=Infinity;branches.forEach(({source,target},index)=>{const y=(row.id==='measurement'?290:350)+index*115,tx=row.id==='measurement'?600:95+(target.grade-1)*190,color=data.rows.find(r=>r.id===target.route)?.color||target.color||'#7c8190',elbow=Math.max(24,Math.min(branchElbow(row,{source,target}),previousElbow-36)),path='M'+(elbow-28)+' 235 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otherId=row.id==='relations'?'measurement':'relations',other=data.rows.find(r=>r.id===otherId)||data.routeContext?.row,svg=q('.cdr-scroll svg');if(!other||!svg)return;const ns='http:\/\/www.w3.org\/2000\/svg';{const shift=row.id==='measurement'?0:-55;const lane=document.createElementNS(ns,'g');lane.setAttribute('class','cdr-field-offset');lane.setAttribute('transform','translate(0 '+shift+')');Array.from(svg.children).filter(e=>e.matches('.cdr-main-track,a[data-unit]')).forEach(e=>lane.append(e));svg.append(lane);}const isMeasurement=other.id==='measurement',sourceY=235,start=isMeasurement?5:600,end=isMeasurement?550:1160;let markup='<g class=\"cdr-route-context\"'+(isMeasurement?'':' transform=\"translate(0 -55)\"')+' aria-label=\"'+E(other.name)+'\u306e\u3064\u306a\u304c\u308a\"><path class=\"cdr-context-track\" d=\"M'+start+' 235H'+end+'\" stroke=\"'+other.color+'\" 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