vat ly 9 tron bo

7/21/2019 Vat Ly 9 tron bo

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Gio n vt l 9Trng THCS Tn AnGing: 9A:..9B:..Tit 1:

HNG DN S DNG SCH GIO KHOA, TI LI UV PHNG PHP HC TP B MN

I - Mc tiu :

1. Kin thc :- Bit c ni dung chnh cc chng, cc phn s hc trong chng trnh SGK- Bit c !t s" t#i $i%u th&! 'h(o ph)c *) cho hc t+p !n- Bit c !t s" phng php hc t+p !n

2. K nng:- B.c u c/ '0 n1ng 'h&i thc s2 d)ng SGK, t#i $i%u th&! 'h(o- S2 d)ng c !t s" 3 d4ng, d)ng c) o 5 c $#! 6u7n 8 cc$.p d.i

3. Thi : - 9/ thi nghi:! t;c trong hc t+p,


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Gio n vt l 9Trng THCS Tn An

chung *# tri thQc @+t $O n/i ri:ng cI&hc sinh PZ / c/ ci nhn < Ihn *U th gi.i tF nhi:nN- JS= [gh7, nh. $i *&i tr\ cI& *+t $O'ho& hc trong Xi s"ng h#ng ng#


3/188


PJ9S cI& h&n Jo#ng @1nNl Sch nng c&o= tut *#i 7! $:n (ng trnh #?%0 ") "3* - &/ ;%V- F- hng php thFc nghi%!- hng php nghi:n sF ph)thuc cI& !t i $ng *+t $O *#occ


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Gio n vt l 9Trng THCS Tn AnDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDGing: 9A:..9B:..

T it 2:CHNG I4 6IN HC(

S PH THUC C7A CQNG 6 DRNG 6INVO HIU 6IN TH GIA HAI 6U DW DN(

I(MX* -c !ch i%n th7o s 3 -S2 d)ng cc d)ng c) o= @n ', &!p7' -S2 d)ng !t s" thu+t ngW 'hi n/i *U hi%u i%n th *# cXng d\ng i%n -K0 n1ng * *# s2 $ 3 thH ). T"i 67: -:u thch !n hc

II( C"#$% &'4 1. Gio vin: B(ng ph) ghi ni dung (ng Ltr-SGKN, (ng Mtr-SGKN

B(ng L= K6 o

n o

Ji%u i%nth@N

9Xng d\ng

i%n?N

L _ _M M,^ _,L] , _,M b,L _,Mb

L_,b _,]b

B(ng M= K6 o

n o

Ji%u i%nth@N

9Xng d\ng

i%n?NL M,_ _,LM M,] _,M _,M

a,_

( Bng 1: Gio i!n "#m th$ nghim tr%c & 'hng th)c h#nh-*o +nh %i ,t./ "#m c hc +inh2. 8i n"% " !in" =->t d< dn Rng nicr! chiUu d#i Lb__!!, Xng 'nh _,]!!, d< n#Z @Z ">?%0 )% -"J %0"


6/188

Gio n vt l 9Trng THCS Tn Ancho 't 6u( s&u

-G@ gi i i%n nh/! c 't 6u(th nghi%!, G@ ghi $:n (ng ph)-Gi cc nh/! 'hc tr( $Xi cu 9L tZ't 6u( th nghi%! cI& nh/!

-G@ nh gi 't 6u( th nghi%! cI&cc nh/! :u cu JS ghi cu tr( $Xi9L *#o *8

l~< = PZ 'ho K tr8 *U cFc dngcI& ngu3nl~< , d< a= PZ cc n;! -N, lNcI& *n ' !c *#o h&i u on d Tt ' tr:n 3 thH t& $#!nh s&u=lK Xng thng song song *.i tr)cho#nh, ct tr)c tung ti iE! c/cXng ` tng QnglK Xng thng song song *.i tr)ctung, ct tr)c ho#nh ti iE! c/ hi%ui%n th y tng Qng9= K6 o

n o

Ji%u i%nth @N

9Xng d\ng i%n

?NL M _,LM M, _,LM] _,M

= J~@[= lJc thuc phn ghi nh. lc th:! !)c 9/ thE 7! ch& it lJc #i *# $#! #i t+p L SBP.: /0t kinh n(hi1m (i 3%4:5555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555

55555555555555555555555555555555Ging: 9A:..9B:..T it 3:

6IN Thi C7A DW DN!6jNH LUT M(

?>9 P`y=LKin thQc=

-[h+n it c n *H i%n tr8 *# *+n d)ng c cng thQc tnh i%n tr8 E

gi(i #i t+p-ht iEu *# *it c h% thQc cI& Hnh $u+t A!-@+n d)ng c Hnh $u+t A! E gi(i !t s" dng #i t+p n gi(n

MK0 n1ng =

GV:Trn Vit Cng Nm hc :2012 - 20137


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Gio n vt l 9Trng THCS Tn An-S2 d)ng !t s" thu+t ngW 'hi n/i *U hi%u i%n th *# cXng d\ng i%n-@ s 3 !ch i%n s2 d)ng cc d)ng c) o E c Hnh i%n tr8 cI& !td< dn ] Phi =-9n th+n, 'i:n tr trong hc t+p B9Jy[ B 9? G`} @`[ @ J9 S`[J

G@= K szn (ng ghi gi trH thng s"8

9

9J{|[G J} = -~F& *#o 't 6u( s" $i%u trong (ng L *# M 8 #i L,

JS tnh thng s"8

9[h+n qt

-Phu th+p thng tin= ~F& *#o s" $i%u thu c tZ P[ 8 #i tr.c ~ P 9J9 JP [G ~ J9 L= Kim tra :KiE! tr& #i c=

L [:u 't $u+n *U !"i 6u&n h% giW&hi%u i%n th giW& h&i u d< dn *#cXng d\ng i%n ch< 6u& d:g&! L>L___ ___- ngh0& cI& i%n tr8= BiEu thH !Qc c(n tr8 d\ng i%n nhiUu h&< t cI&

d< dnH$%t &-n(2 :J}P B`y @ @`P B`y PJ9 [J yP A>

-G@ h.ng dn JS tZ cng thQc8 8

D 99 D

= = *# thng o < chnh

$# iEu thQc cI& Hnh $u+t A! :ucu dF& *#o iEu thQc Hnh $u+t A!

h5< pht iEu Hnh $u+t A!

`` Hnh $u+t A! L J% thQc cI& Hnh $u+t

89

D=

trong ?E: 8 ?o ;Fng n (V> 9 ?o ;Fng m'H (> D ?o ;Fng m (I

M ht iEu Hnh $u+t Cng ?J Kng ?in chL< ./ KM t( c cch " tr P[ 'iE! tr& $i cc h% thQc su< r& tZ $ thu


15/188


-K0 n1ng thFc h#nh s2 d)ng cc d)ng c) o i%n= *n ', &!p7 '-K0 n1ng " tr, tin h#nh $p rp P[-K0 n1ng su< $u+n] Phi =-@+n d)ng 'in thQc 5 hc E gi(i thch !t s" hi%n tng n gi(n c/ $i:n 6u&n trong

thFc t-:u thch !n hc B 9Jy[ B ~[G= "i *.i !Vi nh/! JS=-] i%n tr8 !u= wLL wML_ w]a-L &!p7 ' c/ GJ L? -L *n' c/ GJ a@-L cng tc -L ngu3n i%n a@ -9c on d< n"i 9J{|[G J}= Phng 6u& #i t+p, !8 rng cho on !ch g3! ] i%n tr8 !c

song song *# c/ trH s" i%n tr8 Rng nh&u *# Rng wLth L

]

tK

DD =

~P 9J9 JP [G ~ J9). Kim tra:

-Prong on !ch g3! M /ng n !c song song, hi%u i%n th *#cXng d\ng i%n cI& on !ch c/ 6u&n h% th n#o *.i hi%ui%n th *# cXng d\ng i%n cc !ch r@= "i *.i on !ch !c n"i tip, ch;ng t& 5 it wtRng

tYng cc i%n tr8 th#nh phn @.i on !ch song song i%n tr8tng ng cI& on !ch c/ Rng tYng cc i%n tr8 th#nh phn'hngB#i !.i

LM=yyLyM``Ll`M

2.Dy hc bi mi

H$%t &'n( )= [J[ B`P [ >9J G> J? `[ Pw >9 S[GS[G

-:u cu JS 6u&n st s 3 !ch i%n hnhL *# cho it i%n tr8 wL*# wMc !c*.i nh&u nh th n#o [:u *&i tr\ cI& *n', &!p7 ' trong s 3-G@ thng o cc h% thQc *U !"i 6u&n h%giW& y, trong on !ch c/ h&i /ng nsong song *n ;ng cho trXng hp M i%ntr8 wLwM@it h% thQc *.i h&i i%n tr8wLwM-J.ng dn JS th(o $u+n 9M-9/ thE & r& nhiUu cch chQng!inhG@ nh+n qt Y sung

9Xng d\ng i%n *# hi%u i%n thtrong on !ch song song-Jnh L= wLwM?N nt wLwMN?N o cXng d\ngi%n !ch chnh @N o JP giW& h&iiE! ?, B cng chnh $# JP giW& h&i uwL*# wMy?ByLyM LN`?B`Ll`M MN9M= P/! tt= wLwM

9!=L M

M L

9 D

9 D=



16/188


-PZ iEu thQc ]N, h5< pht iEu th#nh $Xi

!"i 6u&n h% giW& cXng d\ng i%n 6u&cc !ch r *# i%n tr8 th#nh phn

Gi(i= }p d)ng iEu thQc Hnh $u+t A! cho!Vi on !ch nhnh, t& c/=

L

L L L M

MM M L

M

8

9 D 8 D

89 8 D

D

= = @ wLwMn:n yLyM

L M

M L

9 D

9 D= ]N Prong on !ch song song

cXng d\ng i%n 6u& cc !ch r t $%nghHch *.i i%n tr8 th#nh phn

H$%t &'n(2= ~[G 9A[G PJ9 P[J `[ Pw P{|[G {|[G 9?[ >9J G> J? `[ Pw >9 S[G S[G

-:u cu c nhn JS ho#n th#nh cu 9]

-Gi L JS $:n (ng trnh #


17/188


-:u cu JS pht iEu th#nh $Xi !"i 6u&nh% giW& y, , w trong on !ch song song-:u cu JS th(o $u+n nh/! nhm tr( $Xi cu9-:u cu c nhn ho#n th#nh cu 9

-G@ !8 rng=

lProng on !ch c/ ] i%n tr8 !c songsong th i%n tr8 tng ng=

L M ]

L L L L

tKD D D D

= + +

9= l@ 6ut trn *# n d< t/c c/ c4ngJP Hnh !Qc $# MM_@n *# 6ut

c !c song song *#o ngu3n MM_@ Ech;ng hot ng nh thXnglS 3 !ch i%n=

l[u n 'hng hot ng th 6ut *nhot ng *# 6ut *n c !c *#o JP

5 cho ch;ng hot ng c $+p nh&uN3. !"# c$9= l@ wLwMdo / i%n tr8 tng ng wLM$#=

LM

LM L M

L L L L L LLi

]_ ]_ LiD

D D D= + = + = =

lKhi !c th:! i%n tr8 w]th i%n tr8 tng ng w?9cI& on !ch !.i $#=

LM ]

L L L L L ] LL_

Li ]_ ]_ L_ C

C

DD D D

= + = + = = =

w?9nhm hn !Vi i%n tr8 th#nh ph

%( H&"# '(" )* "h4 -#! #i t+p SBPN -An $i 'in thQc #i M, , .: /0t kinh n(hi1m (i 3%4:555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555

Ging: 9A:..9B:..

Tit7 BI TP VN DNG 6jNH LUT M(

?>9 P`y=

L Kin thQc= - @+n d)ng cc 'in thQc 5 hc E gi(i c cc #i t+p n

gi(n *U on !ch g3! nhiUu nhTt $# ] i%n tr8


>


18/188


M K0 n1ng= -Gi(i #i t+p *+t $ th7o ;ng cc .c gi(i -wn '0 n1ng phn tch, so snh, tYng hp thng tin -S2 d)ng ;ng cc thu+t ngW ] Phi = -9n th+n, trung thFc B ~[G ~ J9 B(ng ph)

9J{|[G J}=9c .c gi(i #i t+p=

-B.c L= P! hiEu t/! tt U #i, * s 3 !ch i%n nu c/N -B.c M= hn tch !ch i%n, t! cng thQc $i:n 6u&n n cc i $ng

-B.c ]= @+n d)ng cng thQc 5 hc E gi(i #i ton -B.c = KiE! tr& 't 6u(, tr( $Xi

~ P 9J9 JP [G ~ J99(Kim-@Z4

K`> Pw? B` 9-P 9J9 P[J Jy[G J9 P

-ht iEu *# *it iEu thQc Hnh $u+t A!-@it cng thQc iEu dixn !"i 6u&n h%giW& y, `, w trong on !ch c/ M i%n

tr8 !c n"i tip, song song@=Pr7o (ng ph) cc .c chung E gi(i #i t+p i%n

2.Dy hc bi mi:

H$%t &'n( )= G`` B` P L

-Gi L JS c U #i #i L-Gi L JS t/! tt U #i-:u cu c nhn JS gi(i #i t+p L r&nhp-J.ng dn=l9ho it wL*# wMc !c *.i nh&unh th n#o ?!p7 ', *n 'o nhWngi $ng n#o trong !ch i%n

l@+n d)ng cng thQc n#o E tnh i%n tr8tng ng wtd*# wM Ph&< s" tnhwtdwM

P/! tt= wL

y*

a@ `?

_,?&Nwtd wMB#i gi(i=hn tch !ch i%n= wLnt wM

?Nnt wLnt wM `?`?B_,?y*y?Ba@

&Na

LM_,i

BtK

B

8 VD

9 = = =

i%n tr8 tng ng cI& on !ch ?B$# LMN @ wLnt wMwtdwLlwMwMwtd - wLLM-^



19/188


-:u cu JS n:u cch gi(i 'hc, chnghn= Pnh yLs&u / tnh yMwM*# tnhwtdwLlwM

@+< i%n tr8 wMRng ^

H$%t &'n( 2= G`` B` P M=

-Gi L JS c U #i #i M-:u cu c nhn gi(i #i M th7o ;ng cc

.c gi(i-S&u 'hi JS $#! #i ong, G@ thu !t s"

#i cI& JS E 'iE! tr&-Gi L JS $:n chW& phn &N L JS chW&

phn N-Gi JS 'hc n:u nh+n qt [:u cc cch

gi(i 'hc * d)= @L M

L M

M L

9 D

D D9 D

=

9ch tnh wM*.i wL `L5 it `M` - `LJokc i tnh w?B=

L M M L

M

M

LM M_

L,b ]

L L L L L L

L ] L LM_

M_ L_ M_

BB

B

B B

8 VD

9

D D D D D D

DD

= = =

= + =

= = =

S&u 'hi it wMcng c/ thE tnhy?B`w?B-Gi JS so snh cch tnh wM

P/! tt=wLL_ `?LL,M? `?L,b?

&N y?B NwMB#i gi(i=

&N ?Nnt wL L`?LL,M??N nt wL wMN `?`?BL,b?

PZ cng thQc=L L L

L M L M

L,ML_ LMK N

LMB

89 8 9 D 8 9 D V

D

D D 8 8 8 V

= = = = =

= = =

Ji%u i%n th giW& h&i iE! ?B $# LM@N @ wLwMn:n ``Ll`M`M`-

`LL,b?-L,M?_,a?M

M

M

LMM_

_,a

8 VD

D = = =

@+< i%n tr8 wMRng M_

H$%t &'n( = G`` B` P ]=

-Png tF h.ng dn JS gi(i #i t+p ]-G@ chW& #i *# u& r& iEu iE! chT!cho tZng cu :u cu JS Yi #i chonh&u E chT! iE! cho cc n trongnh/!-u O cc cch tnh 'hc nh&u, nu ;ng

*n cho iE! t"i &

P/! tt= L iE!NwLL wMw]]_ y?BLM@&Nw?B N`L, `M, `]B#i gi(i=

&N ?Nnt wLnt wMw]N L iE!N@ wMw]wM,]]_=MLN L iE!N

9/ thE tnh 'hc 't 6u( ;ng cng cho LiE!Nw?BwLlwM,]LlL]_ LiE!N

GV:Trn Vit Cng Nm hc :2012 - 20131S


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i%n tr8 cI& on !ch ?B $# ]_ _,iE!N

N }p d)ng cng thQc Hnh $u+t A!

L

LM_,c

]_

_,c

BB

B

B

88 V9 9

D D

9 9

= = = =

= =

L,iE!N

L L L _, cLi a8 9 D V = = = L iE!NM ] L LM a aB8 8 8 8 V V V = = = = _,iE!N

MM

M

a_,MK N

]_

89

D= = = L iE!N

M ] _,M9 9 = = _,iE!N@+< cXng d\ng i%n 6u& wL$# _,?9Xng d\ng i%n 6u& wM w]Rng

nh&u *# Rng _,M? L iE!Nv

( C]%0 *4B#i L= *+n d)ng *.i on !ch g3! M i%n tr8 !c n"i tipB#i M= *+n d)ng *.i on !ch g3! M i%n tr8 !c song songB#i ]= *+n d)ng cho on !ch hVn hp u O cch tnh i%n tr8 tng ng *.i!ch hVn hp

k. +"# '(" )* "h:


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] Phi = Prung thFc, c/ tinh thn hp tc trong hot ng nh/! B ~[G ~ J9"i *.i !Vi nh/! JS=- L ngu3n i%n V v" )cng tc -L &!p7 ' c/ GJ $# L?- L *n ' c/ GJ $# a@ -] i%n tr8= SLSMS]c4ng $oi *+t $i%u- $LC__!! $MLb__!! $]M^__!! - 9c i%n tr8 c/ _,]!! 9J{|[G J}= Phu th+p thng tin dF on su< $u+n dixn dHch tZ trXnghp chung cho !t trXng hp ri:ng KiE! tr& Rng thFc nghi%! Khng Hnh tnh;ng n ~P 9J9 JP [G ~ J9.Kim tra:

-JSL= 9hW& #i t+p aM phn &N SBPN

JS c/ thE 'hng cn tnh c) thE nhng gi(ithch ;ng E i n cch !c iE!N@ s 3 ;ng iE!N-JSM=L Prong on !ch g3! M i%n tr8 !cn"itip cXng d\ng i%n ch< 6u& !Vi i%ntr8 c/ !"i 6u&n h% nh th n#o *.i cXng d\ng i%n !ch chnh

Ji%u i%n th giW& h&i u on !ch $i:nh% nh th n#o *.i !Vi i%n tr8 th#nh phnM@ s 3 !ch i%n s2 d)ng *n ' *#&!p7 ' E o i%n tr8 cI& !t d< dn-G@ nh gi cho iE! M JS@= 9h;ng t& it *.i !Vi d< dn th w $#'hng Yi @+< i%n tr8 !Vi d< dn ph)thuc nh th n#o *#o (n thn d< dn /B#i !.i

B#i aM phn &N

&N @ M cch !c Uu c !c *#oc4ng !t hi%u i%n th ya@

9L= i%n tr8 tng ng cI& on !ch $#=

td L

L

aw Li

_,ctK

8 VD

9 = = =

9M= i%n tr8 tng ng cI& on !ch $#

M M

M

L M

a L_

L,b ]tK tK

tK tK

8 VD D

9

D D

= = =

>

9ch L= wLnt wM 9ch M= wLwM

L M L M

L M

L M

D ntD 9 9 9

8 8 8

D D D

= =

= +

= +

-@ ;ng s 3 !ch i%n, ch r ch"t n"i*n ', &!p7 ' iE!N

2.Dy hc bi mi:H$%t &'n(): P> J`y `[ Pw ~ ~[ J PJy9 @ [J[G y

P [

-:u cu JS 6u&n st cc on d< dn 8hnh L cho it ch;ng 'hc nh&u 8


22/188


cI& d< dn-:u cu th(o $u+n nh/! U r& phng n'iE! tr& sF ph) thuc cI& i%n tr8 d< dn*#o chiUu d#i d< dn-:u cu & r& phng n P[ tYng 6ut Ec/ thE 'iE! tr& sF ph) thuc cI& i%n tr8 *#oL trong ] c !ch i%n th7o s 3 hnhM&:u cu cc nh/! chn d)ng c) P[,

tin h#nh P[ th7o nh/!, ghi 't 6u( *#o(ng L #! P[ tng tF th7o s 3 hnh^M ^Mc-G@ thu 't 6u( P[ cI& cc nh/! Gicc n nh/! 'hc nh+n qt

-:u cu n:u 't $u+n 6u& P[ 'iE! tr& dFon-G@= @.i M d< dn c/ i%n tr8 tng QngwL, wMc/ c4ng tit di%n *# c $#! tZ c4ng!t $oi *+t $i%u , chiUu d#i d< tng Qng $#

$L, $Mth=L L

M M

D "

D "=

` SF sF phuc cI& i%n tr8 *#o chiUu d#id< dnL~F 'in cch $#!

M Ph nghi%! 'iE! tr&

] Kt $u+n=

i%n tr8 cI& cc d< dn c/ c4ng tit di%n *#c $#! tZ c4ng !t $oi *+t $i%u th t $%

thu+n *.i chiUu d#i cI& !Vi d


23/188


L LL M

M M

cD "

" "D "

= =

k( H>%0 1b% cr %"E-Jc #i *# $#! #i t+p SBP ,: t /i"h "#hi0m #i1 'y:

55555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555

Ging: 9A:..9B:..

Tit9: S PH THUC C7A 6IN Thi VO TIT DIN DW DN( `>9 P`y=L Kin thQc=-Su< $u+n c rRng cc d< dn c/ c4ng chiUu d#i *# $#! tZ c4ng !t $oi *+t $i%u th i%ntr8 cI& ch;ng t $% nghHch *.i tit di%n cI& d Pw? B 9-P 9J9 P[J Jy[G J9 P

L Prong on !ch g3! M i%n tr8 !csong song, JP *# cXng d\ng i%n cI&

on !ch c/ 6u&n h% th n#o *.i JP *#cXng d\ng i%n cI& cc !ch r @itcng thQc tnh i%n tr8 tng ng cI&on !ch /

L T@+%0 .+% ;*" 0f;

L M

L M

L M

LM L M

nn =

L L L

D D

9 9 9

8 8 8

D D D

= +

= =

= +



24/188

Gio n vt l 9Trng THCS Tn AnM >u"n c Hnh !"i 6u&n h% giW& i%n tr8*#o chiUu d#i d< dn th ph(i o i%n tr8cI& d< dn nh th n#o

] @ s 3 !ch i%n 'iE! tr& sF ph)thuc cI& i%n tr8 d< dn *#o chiUu d#id K`> Pw? ~ }[

-@ s 3 !ch i%n 'iE! tr&[:u d)ngc) cn thit E $#! P[, cc .c tin h#nhP[-:u cu JS $#! P[ 'iE! tr& th7o nh/!

E ho#n th#nh (ng L-trM]-G@ thu 't 6u( P[ cI& ccnh/!J.ng dn th(o $u+n chung c( $.p-:u cu so snh *.i dF on E r;t r& 't$u+n-:u cu JS c


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