《2.物体的分类》教学ppt课件-2024新粤教粤科版一年级上册《科学》.zip

第2课 物体的分类粤教科技版 小学科学 一年级上册你的书包里有什么？我认为可以按书本的大小分。问题与想法1我们该如何给书包里的物品分类呢？可以参考以下句式与同学交流：我按照颜颜色色（特征）进行分类，可以将书包里的物品分成红色的、黄色的、蓝色的探索与实践1观察书包里的物品有什么特征，再选一个特征进行分类。说一说，我们还可以怎么分类。可从颜色、形状、颜色、形状、材料、功能、长短、材料、功能、长短、轻重、大小、轻重、大小、薄薄厚、厚、软硬软硬等不同的方面进行观察与描述。我的发现：可根据颜色、形状、材料、功能、长短、轻重、大小、薄厚、软硬等不同特征进行分类。讨论与发现1除了之前选定的特征，你还可以根据其他特征对物体进行分类吗？我的猜想：我们可以先设定形状、长短、薄厚等标准，然后对照标准对文具分类。问题与想法2我们可以先设定标准，再对物体进行分类吗？圆珠笔铅笔毛笔我选一拃拃作为标准。问题与想法2比较笔盒里不同文具的长短，然后进行分类。圆珠笔 铅笔 毛笔观察：观察：长度刚好是一拃。这支铅笔比一拃短。这支毛笔比一拃长。观察并记录：比一拃比一拃短短的文具的文具长度是一拃的文具长度是一拃的文具比一拃比一拃长长的文具的文具分类结果分类结果我的发现：我们可以现观察物体特征，再选定一个特征作为标准，对物体进行比较，把同类型的归为一类。讨论与发现2通过活动，你知道我们应该怎样对物体进行分类吗？思考与练习尝试分类整理衣柜，先说一说分类标准，再回家动手试一试。#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#QQABDY6UogCAQoBAARgCAwHYCAGQkACACQgGBBAMMAAAwQFABAA=#