Instruct the students to count the faces of cuboids in order.

引导学生有规律的数出长方体的面. (请同学数)

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Point to the lengths, widths, and heights of cuboids for each other.

互相指出不同长方体实物的长 、 宽 、 高.

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Get the students to learn about cuboids and cubes. Grasp the features of cuboids and cubes.

使学生认识长方体、正方体, 并掌握长方体、正方体的特征.

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Discuss what features cubes have according to the features of cuboids and the cube models.

根据长方体的特征以及正方体模型讨论正方体有什么特征?

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Which objects are cuboids? Which objects are cubes? Please give us some examples.

1、师:同学们举例说出哪些物体是长方体或正方体?

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Recognize and understand the lengths , widths and heights of cuboids and the edges of cubes.

认识并理解长方体的长、宽、高,正方体的棱.

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