<p class="ql-block">活動目標(biāo):</p><p class="ql-block">1.初步認(rèn)識沉與浮，探索在不同的材料中雞蛋在水里的變化；</p><p class="ql-block">2.在實(shí)驗(yàn)操作中能認(rèn)真觀察，并能按要求填寫自己的觀察記錄表；</p><p class="ql-block">3.喜歡動手操作，對做沉浮小實(shí)驗(yàn)產(chǎn)生濃厚興趣。</p><p class="ql-block">活動準(zhǔn)備:</p><p class="ql-block">1.兩個(gè)杯子、清水、鹽、雞蛋。</p><p class="ql-block">2.先把雞蛋放入清水中，雞蛋沉下去了。</p><p class="ql-block">3.將鹽加入另一個(gè)水杯中。</p><p class="ql-block">4.把雞蛋放入裝鹽水的杯子中，雞蛋浮起來了。</p><p class="ql-block">實(shí)驗(yàn)原理:</p><p class="ql-block">生雞蛋的密度比清水大，所以剛開始雞蛋是沉入水底的隨著食鹽的加入，鹽水的密度越來越大，當(dāng)大于雞蛋的密度后，雞蛋就會浮起來了。</p><p class="ql-block">來看看我們班同學(xué)做的實(shí)驗(yàn)吧！</p> <p class="ql-block">余李未央同學(xué)</p> <p class="ql-block">邱詩雅同學(xué)</p> <p class="ql-block">滕可馨同學(xué)</p> <p class="ql-block">徐韓菲同學(xué)</p> <p class="ql-block">滕興龍同學(xué)</p> <p class="ql-block">蔣晨皓同學(xué)</p> <p class="ql-block">徐安薈同學(xué)</p> <p class="ql-block">葉雪韓同學(xué)</p> <p class="ql-block"><a href="http://m.kamkm888.com/4peb8d57?first_share_to=group_singlemessage&share_depth=1&first_share_uid=5588470" target="_blank">周鈺恒同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4jhveh0n?mina_from=1" target="_blank">吳晨希同學(xué)</a></p> <p class="ql-block"><a href="https://www.jianpian.cn/a/eqgwqyh?sc=groupmessage&sd=1&a_uid=3890144&s_uid=3890144" target="_blank">汪玉錦同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pdt1n0k?share_from=self&share_to=group_singlemessage&user_id=189157044&uuid=80f4654963f01c2575e3964fdcc15ca4&share_depth=1&first_share_uid=189157044&utm_medium=meipian_android&share_user_mpuuid=30691525cdfe89a6bc529498124a1f79&um_rtc=6ce00dfbe3fa992f923b602ef4863921&from=singlemessage&first_share_to=singlemessage" target="_blank">柯禹洋同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pd6jo9q?first_share_to=group_singlemessage&share_depth=1&first_share_uid=483995285" target="_blank">姜鈺鴻同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pd61zor?first_share_to=group_singlemessage&share_depth=1&first_share_uid=81429833" target="_blank">徐佳韻同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4hgq37th?share_from=self&share_to=group_singlemessage&user_id=38330630&uuid=afcc30aa01091bfe14126802c634d8f5&share_depth=1&first_share_uid=38330630&utm_medium=meipian_android&share_user_mpuuid=51b60f82652b626f9acabe8e82d970f9&um_rtc=b45a679348446dd9c5ad546c419e2ab3&from=singlemessage&first_share_to=singlemessage" target="_blank">程子洋同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pcz4vvm?first_share_to=group_singlemessage&share_depth=1&first_share_uid=193018248" target="_blank">王陳晞同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pcujvdc?mina_from=1" target="_blank">徐子涵同學(xué)</a></p> <p class="ql-block"><a href="https://www.jianpian.cn/a/eoq6zf4?sc=groupmessage&sd=1&a_uid=4151474&s_uid=4151474" target="_blank">洪瑜悅同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pcivyi8?first_share_uid=50233412&share_depth=1&first_share_to=group_singlemessage" target="_blank">毛錦天同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pciuqpm?first_share_to=group_singlemessage&share_depth=1&first_share_uid=102676435" target="_blank">胡晨茜同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pce6m30?first_share_to=group_singlemessage&share_depth=1&first_share_uid=66710470" target="_blank">楊若琳同學(xué)</a></p> <p class="ql-block"><a href="http://m.kamkm888.com/4pbwcaet?mina_from=1" target="_blank">徐鑫淼同學(xué)</a></p>