画蒲公英教学课件.ppt

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1、Logo学堂请用一句话介绍一个你熟悉的Logo命令。画蒲公英4030度请用中文指挥小海龟模拟画花瓣请问花瓣之间的夹角为多少度？比一比FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40HOMERT30FD40HOMERT60FD40HOMERT90FD40HOMERT120FD4

2、0HOMERT150FD40HOMERT180FD40HOMERT210FD40HOMERT240FD40HOMERT270FD40HOMERT300FD40HOMERT330FD40HOME试一试FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT3012个花瓣的蒲公英试一试FD40BK4

3、0RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15FD40BK40RT15……FD40BK40RT1524个花瓣的蒲公英24个15度试一试FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3……FD40B

4、K40RT3120个花瓣的蒲公英120个3度repeat次数[需要重复的命令]作用：把方括号内的命令重复执行指定的次数FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3FD40BK40RT3……FD40BK40RT3120个花瓣的蒲公英120个想一想，创造一个命令简化程序用REPEAT命令简化下列命令FD40BK40RT30FD40BK40RT30FD40BK40RT30F

5、D40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30FD40BK40RT30用REPEAT命令简化下列命令FD100RT120FD100RT120FD100RT120用REPEAT命令简化下列命令LT90FD60RT90FD100RT90FD60RT90FD100RT90用REPEAT命令简化下列命令FD40HOMERT30FD40HOMERT60FD40HOMERT90FD40HO

6、MERT120FD40HOMERT150FD40HOMERT180FD40HOMERT210FD40HOMERT240FD40HOMERT270FD40HOMERT300FD40HOMERT330FD40HOME用REPEAT命令画出上面的图形，或者自己创作喜欢的图形。练一练1001040通过今天的学习你有哪些收获？