7 角的初步认识-2021春二年级下册数学【五星红领巾乐园】同步课堂(苏教版)

!"#$% !! & "#$ &*""" C $ D%EF23 ' % () $ 78p " 0 %# ! ! �#$%É.Íy}^ # 3 ! ýF�É ' ýF��É ' % �.j ( ! )" ��.j ( " )& %' $$&' $$+' $$!$$" $$!$$" $$!$$" .' (' -' $$!$$" $$!$$" $$!$$" 6 ! $%ÌÊ*+uTNÉ ' !$$$" #Ð $ $$!$$$" #Ð $$$!$$$" #Ð !$$$" #Ð $ $!$$$" #Ð $ $!$$$" #Ð < ! e$%.ÌÊ*]# + NÉ " 1�!� # $$ y":�z ®SA`D " y%M-< y%A`D{s %|,"� ! A `D { s h } M ! yÜ}M % A `D { s h } - ! yÜ}- " 89 $ :; $ 211 :%.1 * ./& :%/1 * +11 :%&1 * (.1 5/1 * /&( :.&( * .(1 5%(1 * 311 :/21 * %&2 5/& * &31 5%+1 * +&2 5(& * '+""" $ 12345 ! ,6 C ! D$%6NÉô�Æ=S~.WcL!L " Dcd5e %$$& f # $$ $ $$$$ ! $$$$$$$$$ " $$$$$$$$$ # $$$$$$$!$$$" 7!$$$" 7!$$$" X ! 7!7 # I*- $ ­{#Ð,ð�_bn $ �#Ð,:;s !$$"% !]: $$$$$$$$$ "]; $$$$$$$$$$ #�] r ! ¬­ËM.Íy}!Ì^j!N©�Ô].É # ä !# 120 $ DX^ÊÍÃ!NÉ " W$.,-u`*NÉ ' �!� " 1j!j # !"#$% !! & "#$ '!""" ' & () $ 78qp $ rp $ sp " 0 &$ 0 +# ! ! �s!NÌÊ.�!�#ã�+ÌÊ*.ÎÉ # 3 ! 5!5 " L!L # !$$$" Ð $$$$!$$$" Ð $$$$!$$$" Ð $ ! $$$$$$$$ " $$$$$$$$$ # !$$$" 7!$$$" 7!$$$" 6 ! "#$%QN�%�¢ü®ËÊ:.É./0 # !$$$" Ð $$$$ !$$$" Ð $$$$ !$$$" Ð < ! ÉÊe$%.y!ÏÌ*j!NÐÉ ! !NÎÉ}!NÑÉ # C ! D$Ì*.ÎÉ�#n # $$ H�y~] %÷y34÷y F ! +®�® ! D �D ! d�:`D Ì R ! D � ] �p " 89 $ :; $ 2.. :.-( * +/% :%3+ * -%- :(22 * (%& :+.- * .+- :.& * +.( :%3/ * ++( :&&1 * -(15+(1* ++1 5(/1 * &12 5+/1 * '#""" $ 12345 ! ,6 X ! w!w # %' $$$$$$$$$$$ !$$$" #fÐ !$$$" #cÐ !$$$" #dÐ &' !$$$" #fÐ !$$$" #cÐ !$$$" #dÐ r ! Ë!Ë " 5!5 " Ò!Ò # %' åXe/ $ !4{#fÐ,2. !$$$$$$" f $ 4 . #fÐ,2. !$$$" f $ . !$$$" f/14fÐ % &' dB©. !$$$" f�. !$$$" fî{#fÐ�{#dÐ % ­dî,-gh @æ % ä ! ôõöe$Ì*¾VÓ # %' ?@ð� £ $ Á*-4[#fÐ % $$ $$ &' ?@{� £ $ Á*-?@¨#fÐ % $$$$ +' ?@{� £ $ Á*-?@[#fÐ % $$ $ .' ¢�{#Ð $ Á*-�>{#fÐ % $$$$ !"#$% !! & "#$ '$""" (C)*+, s % t8 $ µ¶É $$ Ð2ë{#i��ð�_'Â,- j % Ð,:;bð�_kr,:;4ò $ bð�_,nølò % s & t8 $ µ¶ÎÉ ! ÐÉ ! ÑÉ $$ �fÐ;,Ð2cÐ $ �fÐ:,Ð 2dÐ # # # # # # # # % $$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ % % % % x_y % $ hÉ.ÔÕ���Ö # ¡¢ # {#Ð,ð�_mn $ �#ÐAm: % !$$" _� $ ! _�-� $ Ð,:;bÐ,ð�_Òr,ny4 ò $ bð�