Đo Độ Dài
<p>- Quan sát rồi thảo luận:</p> <p>&nbsp; &nbsp;Băng giấy nào ngắn nhất?</p> <p>&nbsp; &nbsp;Băng giấy nào dài nhất?</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1361-1663564568.png.webp" alt="hinh-anh-do-do-dai-757-0" title="hinh-anh-do-do-dai-757-0" loading="lazy"></p><div> <div class="ads-horizontal-wrapped" style="height: auto !important; min-height: 0px !important;">
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</div><p></p> <p>- Dùng 7 <img src="/uploads/tinymce/1362-1663564583.png.webp" width="16" height="20" alt="hinh-anh-do-do-dai-757-1" title="hinh-anh-do-do-dai-757-1" loading="lazy"> làm một cây thước để đo độ dài các băng giấy. Các câu trả lời khi thảo luận có đúng không?</p> <p>- Cách đo:</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1363-1663564617.png.webp" width="520" height="151" alt="hinh-anh-do-do-dai-757-2" title="hinh-anh-do-do-dai-757-2" loading="lazy"></p> <h3 id="thuc-hagravenh-1-uoc-luong-roi-do">Thực hành 1. Ước lượng rồi đo.</h3> <p>Đây là các bạn khủng long.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1371-1663564673.png.webp" alt="hinh-anh-do-do-dai-757-3" title="hinh-anh-do-do-dai-757-3" loading="lazy"></p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1372-1663564698.png.webp" width="736" height="667" alt="hinh-anh-do-do-dai-757-4" title="hinh-anh-do-do-dai-757-4" loading="lazy"></p> <h3 id="thuc-hagravenh-2-mot-so-caacutech-do-do-dagravei">Thực hành 2. Một số cách đo độ dài.</h3> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1381-1663564726.png.webp" alt="hinh-anh-do-do-dai-757-5" title="hinh-anh-do-do-dai-757-5" loading="lazy"></p><div> <div class="ads-horizontal-wrapped">
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</div><p></p> <h4>Khám phá</h4> <p>So sánh chiều cao của em và chiều dài sải tay của em.</p> <p><img style="display: block; margin-left: auto; margin-right: auto;" src="/uploads/tinymce/1382-1663564752.png.webp" width="666" height="100" alt="hinh-anh-do-do-dai-757-6" title="hinh-anh-do-do-dai-757-6" loading="lazy"></p> <p>Ước lượng, đo, số đo?</p> <table style="border-collapse: collapse; width: 99.9265%;" border="1"> <tbody> <tr> <td style="width: 30.2382%;">&nbsp;</td> <td style="width: 30.2382%; text-align: center;"><strong>ước lượng</strong></td> <td style="width: 30.2428%; text-align: center;"><strong>đo</strong></td> </tr> <tr> <td style="width: 30.2382%;"><img src="/uploads/tinymce/1391-1663564801.png.webp" width="273" height="307" alt="hinh-anh-do-do-dai-757-7" title="hinh-anh-do-do-dai-757-7" loading="lazy"></td> <td style="width: 30.2382%; text-align: center;">khoảng ..?.. gang tay</td> <td style="width: 30.2428%; text-align: center;">..?.. gang tay</td> </tr> <tr> <td style="width: 30.2382%;"><img src="/uploads/tinymce/1392-1663564809.png.webp" width="304" height="225" alt="hinh-anh-do-do-dai-757-8" title="hinh-anh-do-do-dai-757-8" loading="lazy"></td> <td style="width: 30.2382%; text-align: center;">khoảng ..?.. sải tay</td> <td style="width: 30.2428%; text-align: center;">..?.. sải tay</td> </tr> <tr> <td style="width: 30.2382%;"><img src="/uploads/tinymce/1393-1663564816.png.webp" width="358" height="400" alt="hinh-anh-do-do-dai-757-9" title="hinh-anh-do-do-dai-757-9" loading="lazy"></td> <td style="width: 30.2382%; text-align: center;"> <p><strong>Chiều rộng</strong><br>khoảng ..?.. bước chân<br>khoảng ..?.. viên gạch</p> <p>&nbsp;</p> <p><strong>Chiều dài</strong><br>khoảng ..?.. bước chân<br>khoảng ..?.. viên gạch</p> </td> <td style="width: 30.2428%; text-align: center;"> <p>..?.. bước chân<br>..?.. viên gạch</p> <p>&nbsp;</p> <p>..?.. bước chân<br>..?.. viên gạch</p> </td> </tr> </tbody> </table> <p>&nbsp;</p>