{"id":6125,"date":"2026-10-12T16:12:44","date_gmt":"2026-10-12T09:12:44","guid":{"rendered":"https:\/\/tieuhocvanbao.edu.vn\/?p=6125"},"modified":"2026-10-16T16:16:03","modified_gmt":"2026-10-16T09:16:03","slug":"chuyen-de-mon-khoa-hoc-lop-4","status":"publish","type":"post","link":"https:\/\/tieuhocvanbao.edu.vn\/en\/chuyen-de-mon-khoa-hoc-lop-4\/","title":{"rendered":"CHUY\u00caN \u0110\u1ec0 M\u00d4N KHOA H\u1eccC L\u1edaP 4"},"content":{"rendered":"<div class=\"xdj266r x14z9mp xat24cr x1lziwak x1vvkbs x126k92a\">\n<div dir=\"auto\" style=\"text-align: justify\"><span style=\"font-size: 130%\"><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><\/span> Trong ti\u1ebft chuy\u00ean \u0111\u1ec1 m\u00f4n Khoa h\u1ecdc l\u1edbp 4 v\u1edbi b\u00e0i \u201cVai tr\u00f2 c\u1ee7a kh\u00f4ng kh\u00ed v\u00e0 b\u1ea3o v\u1ec7 b\u1ea7u kh\u00f4ng kh\u00ed trong l\u00e0nh\u201d (Ti\u1ebft 1), c\u00f4 gi\u00e1o Ki\u1ec1u Th\u1ecb B\u1ea3o Y\u1ebfn \u0111\u00e3 v\u1eadn d\u1ee5ng linh ho\u1ea1t c\u00e1c ph\u01b0\u01a1ng ph\u00e1p d\u1ea1y h\u1ecdc, ph\u00e1t huy ph\u1ea9m ch\u1ea5t v\u00e0 n\u0103ng l\u1ef1c h\u1ecdc sinh. Th\u00f4ng qua c\u00e1c ho\u1ea1t \u0111\u1ed9ng th\u1ef1c h\u00e0nh, th\u00ed nghi\u1ec7m v\u00e0 kh\u00e1m ph\u00e1, c\u00e1c em ch\u1ee7 \u0111\u1ed9ng t\u00ecm hi\u1ec3u vai tr\u00f2 c\u1ee7a kh\u00f4ng kh\u00ed, h\u00ecnh th\u00e0nh \u00fd th\u1ee9c b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng. Bu\u1ed5i chuy\u00ean \u0111\u1ec1 g\u00f3p ph\u1ea7n n\u00e2ng cao ch\u1ea5t l\u01b0\u1ee3ng gi\u1ea3ng d\u1ea1y, t\u1ea1o c\u01a1 h\u1ed9i \u0111\u1ec3 gi\u00e1o vi\u00ean trao \u0111\u1ed5i v\u00e0 chia s\u1ebb kinh nghi\u1ec7m chuy\u00ean m\u00f4n.<\/span><\/div>\n<div dir=\"auto\" style=\"text-align: justify\"><span style=\"font-size: 130%\"><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t27\/3\/16\/1f496.png\" alt=\"\ud83d\udc96\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td7\/3\/16\/1f33a.png\" alt=\"\ud83c\udf3a\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t8d\/3\/16\/1f1fb_1f1f3.png\" alt=\"\ud83c\uddfb\ud83c\uddf3\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td7\/3\/16\/1f33a.png\" alt=\"\ud83c\udf3a\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><\/span><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t27\/3\/16\/1f496.png\" alt=\"\ud83d\udc96\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t27\/3\/16\/1f496.png\" alt=\"\ud83d\udc96\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td7\/3\/16\/1f33a.png\" alt=\"\ud83c\udf3a\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t8d\/3\/16\/1f1fb_1f1f3.png\" alt=\"\ud83c\uddfb\ud83c\uddf3\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td7\/3\/16\/1f33a.png\" alt=\"\ud83c\udf3a\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t27\/3\/16\/1f496.png\" alt=\"\ud83d\udc96\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t8d\/3\/16\/1f1fb_1f1f3.png\" alt=\"\ud83c\uddfb\ud83c\uddf3\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td7\/3\/16\/1f33a.png\" alt=\"\ud83c\udf3a\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tb6\/3\/16\/2b50.png\" alt=\"\u2b50\ufe0f\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/t21\/3\/16\/1f490.png\" alt=\"\ud83d\udc90\" width=\"16\" height=\"16\" \/><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/td9\/3\/16\/1f33c.png\" alt=\"\ud83c\udf3c\" width=\"16\" height=\"16\" \/><\/span><\/span><\/div>\n<\/div>\n<div class=\"x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s x126k92a\">\n<div dir=\"auto\" style=\"text-align: justify\"><span style=\"font-size: 130%\"><span class=\"html-span xexx8yu xyri2b x18d9i69 x1c1uobl x1hl2dhg x16tdsg8 x1vvkbs x3nfvp2 x1j61x8r x1fcty0u xdj266r xat24cr xm2jcoa x1mpyi22 xxymvpz xlup9mm x1kky2od\"><img loading=\"lazy\" decoding=\"async\" class=\"xz74otr x15mokao x1ga7v0g x16uus16 xbiv7yw\" src=\"https:\/\/static.xx.fbcdn.net\/images\/emoji.php\/v9\/tc5\/3\/16\/1f340.png\" alt=\"\ud83c\udf40\" width=\"16\" height=\"16\" \/><\/span> In the Grade 4 Science demonstration lesson on \u201cThe Role of Air and Protecting Clean Air\u201d (Period 1), Ms. Kieu Thi Bao Yen flexibly applied various teaching methods to develop students\u2019 qualities and competencies. Through hands-on activities, experiments, and exploration, students actively learned about the role of air and developed an awareness of environmental protection. The lesson helped improve teaching quality and provided opportunities for teachers to exchange ideas and share professional experiences.<\/span><\/div>\n<div dir=\"auto\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6127 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839960357_1814491040205880_3224437662885456309_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6131 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/844889853_1814491550205829_4431680220676876130_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6129 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843161503_1814491176872533_4125084019783112847_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6128 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843089619_1814491696872481_2531949675339762234_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6126 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/839934563_1814491620205822_7462931826487624076_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6132 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/845949735_1814491516872499_3150120221687515391_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6130 alignnone\" src=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n.jpg\" alt=\"\" width=\"2048\" height=\"1536\" srcset=\"https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n.jpg 2048w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n-300x225.jpg 300w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n-1024x768.jpg 1024w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n-768x576.jpg 768w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n-1536x1152.jpg 1536w, https:\/\/tieuhocvanbao.edu.vn\/wp-content\/uploads\/2026\/10\/843315234_1814491046872546_663454723539263062_n-16x12.jpg 16w\" sizes=\"auto, (max-width: 2048px) 100vw, 2048px\" \/><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Trong ti\u1ebft chuy\u00ean \u0111\u1ec1 m\u00f4n Khoa h\u1ecdc l\u1edbp 4 v\u1edbi b\u00e0i \u201cVai tr\u00f2 c\u1ee7a kh\u00f4ng kh\u00ed v\u00e0 b\u1ea3o v\u1ec7 b\u1ea7u kh\u00f4ng kh\u00ed trong l\u00e0nh\u201d (Ti\u1ebft 1), c\u00f4 gi\u00e1o Ki\u1ec1u Th\u1ecb B\u1ea3o Y\u1ebfn \u0111\u00e3 v\u1eadn d\u1ee5ng linh ho\u1ea1t c\u00e1c ph\u01b0\u01a1ng ph\u00e1p d\u1ea1y h\u1ecdc, ph\u00e1t huy ph\u1ea9m ch\u1ea5t v\u00e0 n\u0103ng l\u1ef1c h\u1ecdc sinh. Th\u00f4ng qua c\u00e1c ho\u1ea1t&#8230;<\/p>","protected":false},"author":4,"featured_media":6130,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_glsr_average":0,"_glsr_ranking":0,"_glsr_reviews":0,"footnotes":""},"categories":[48,47,58,1],"tags":[],"class_list":["post-6125","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chuyen-muc-moi","category-thong-bao","category-tieu-bieu","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/posts\/6125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=6125"}],"version-history":[{"count":2,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/posts\/6125\/revisions"}],"predecessor-version":[{"id":6134,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/posts\/6125\/revisions\/6134"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/media\/6130"}],"wp:attachment":[{"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=6125"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=6125"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tieuhocvanbao.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=6125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}