EMiSTee Science High School – Laguna Campus Detailed Lesson Plan: Electric Charges and the Charging Process Grade 7 – Gaea Prepared by: Christopher Rae B. Gigantana I. Obec!"es: #t the end o$ the learning session% the st&dents '&st be able to: (. e)plai e)plain n the the nat& nat&re re o$ a char charge* ge* +. iden!$ iden!$y y the the inter interac! ac!on on o$ o$ char charges ges** ,. di-eren! di-eren!ate ate the the di-erent di-erent chargin charging g processes processes $ro' $ro' each other* other* and and . e)plain e)plain the rela!on rela!onship ship o$ the the charges charges inside inside charged charged bodies bodies in a gi"en syst syste'. e'. II. /&bect 0a1er #. 2opic: 2opic: Electric Charges and the Charging Process B. Re$erences:
i.
Depart'ent o$ Ed&ca!on. 3+4(+5. Electricity. In Science 7 Learning Module 3pp. 7(645. Depart'ent o$ Ed&ca!on. ii. /er8ay /er8ay% R. #.% 9 e8e1% e8e1% . ;. ;. 3+445. 3+445. Physic Physicss $or /cien!sts /cien!sts and and Engineer Engineerss 8ith 0odern 0odern Physics. Physics. Boston: 2ho'son Broo
ric!on 6>ric!on ". 2he 2he Ph Physics sics Clas Classr sroo oo'. '. 3n.d 3n.d.5 .5.. Charging By Inducton . Retrie"ed #pril (7% +4(7% $ro' 2he Physics Classroo': h1p:==888.physicsclassr h1p:==888.physicsclassroo'.co'=class=es oo'.co'=class=esta!cs=Lesson6+=Charging6by ta!cs=Lesson6+=Charging6by6Ind&c!on 6Ind&c!on ?o&ng% @. D.% 9 >reed'an% R. #. 3+4(+5. Ani"ersity Physics 8ith 0odern Physics. /an >rancisco: #ddison6 ;esley
"i. C. 0aterials: plas!c Can6c&p charge set&p ( e'pty so drin< cans o
( /tyroc&p r&bber balloons ( roll o$ !ss&e paper +4 ac!"ity sheets o
III. 2eaching Learning #c!"i!es
Teacher Actviy A. Priming/ Motvaton Good 0orning% Gaea. Please ta
Suden Actviy/Expeced Good 'orning% /ir RC 2han< yo&% /ir.
32he teacher 8ill bring o&t a balloon and 8ill start r&bbing it to his dry hair% 8hile roa'ing his "ie8 aro&nd the classroo' chec
B. Pre-actviy 2hat is correct. Gaea% 8hen 8e say that a 'aterial is charged% it contains charges. /o let 'e introd&ce to yo& the charges. 3Brings o&t t8o dis
charged and electrons are nega!"ely charged. 2he ne&trons% on the other hand% contains no charge. o8 a 'aterial can be posi!"ely charged% nega!"ely charged% or ne&trally charged. o8% 8ill yo& agree that all ato's are nat&rally ne&tral ?es O<. o8 let &s oo' in to the ato' and $oc&s on the electron. ;hy 8ith the electron 2he electron is highly 'obile in the ato'. It 'o"es aro&nd the n&cle&s o$ an ato'. I$ it is 'obile% then 8e can taor' gro&ps according to yo&r pre$erence. 0a
?es% sir. 3/t&dents 8ill $or' their gro&ps and per$or' the instr&c!on gi"en to the'.5
o8 that yo& are in yo&r gro&ps% get the ac!"ity sheets $or yo&r gro&p and yo&r set o$ 'aterials as I hand it o"er to a representa!"e o$ yo&r gro&p. Representa!"es% co'e $or8ard. 3Representa!"es $ro' each gro&p co'e $or8ard and pic< &p a set o$ the 'aterials needed $or the ac!"ity5 ;hat is the !tle o$ o&r ac!"ity $or today o8% can so'eone read to &s the obec!"e o$ o&r ac!"ity $or today
/ir% MElectric Charges and the Charging ProcessN 2he obec!"e o$ the ac!"ity is to per$or' tas
di-erent 8ays o$ charging 'aterials. O
ar ! (. Charge the plas!c sheet by r&bbing in one direc!on only an a'ple a'o&nt o$ !ss&e paper to it. #lso% lay a length o$ !ss&e paper near the plas!c sheet. +. Raise the plas!c sheet and place it near one end o$ the laden length o$ !ss&e paper. Part ( (. Charge the plas!c sheet by r&bbing in one direc!on only an a'ple a'o&nt o$ !ss&e paper to it. #lso% lay a length o$ !ss&e paper near the plas!c sheet. +. Raise the plas!c sheet and place it near one end o$ the laden length o$ !ss&e paper.
ar " (. Charge the balloon by r&bbing it o- yo&r hair or yo&r gro&p'ates hair. ote: 2his 8ill 8or< only i$ the hair is co'pletely dry. +. Place the charged balloon as near as possible to the so drin< can 8itho&t the t8o obects to&ching. /ee g&re no.(.
,. 2o&ch the can 8ith yo&r nger at the end opposite the balloon. . Re'o"e yo&r hand and obser"e ho8 the balloon and the can 8ill interact in bac<8ard6$or8ard 'o!on o$ the can.
>ig&re (. Can6c&p set&p
ar # (. Repeat /teps ( and + in Part + o$ the ac!"ity% b&t this !'e 8ith another can6c&p set&p at the rear o$ the original can6c&p set&p. 0a
C. Actviy Proper 32he teacher gi"es the st&dents 7 'in&tes to do the ac!"ity. 2he teacher 8ill go aro&nd to chec< the st&dents progress and ans8er J&eries abo&t the ac!"ity i$ reJ&ested5 O
E)cellent obser"a!on. @o8 abo&t the second part o$ o&r ac!"ity ;hat happened 8hen so'eone $ro' yo&r gro&p to&ched the other end o$ the
3/t&dents do the ac!"ity 8ithin 7 'in&tes5
3/t&dents $ace the teacher and prepare their sel"es $or listening.5
;hen the r&bbed plas!c sheet 8as bro&ght near to the length o$ !ss&e paper% the !ss&e paper lied &p and got a1racted to the r&bbed plas!c sheet. 2he balloon 'o"ed slightly to8ards the can6c&p set&p.
can6c&p set&p 8hile a charged r&bber balloon is on the other side
#er8ards% 8hen yo& p&lled the can6c&p set bac< and $orth% 8hat did yo& no!ce
o8% ho8 abo&t the third part @o8 did the balloon reacted to the bac< and $orth 'o!on o$ the can6c&p set&p in the bac< E. Absracton Good ob on obser"ing the interac!ons in o&r ac!"ity. Gi"e yo&rsel"es a ro&nd o$ appla&se
2he balloon also 'o"ed in the sa'e direc!on o$ 'o!on o$ the can6c&p set% as the balloon is a1racted to the can. 2he balloon also 'o"ed% b&t this !'e% the 'o!on 8as opposite to that o$ the can6c&p set&p.
3/t&dents claps $or appla&se5 o8% 8e 8ill e)plain 8hat really happened in the ac!"ity. I 8ill 'aric!onN. 32eacher 8rites on the blacric!on +. ,. 3/t&dents 8rites on their notes.5 2he second part is contrary to charging by $ric!on beca&se it does not in"ol"e contact bet8een the charged bodies. 2he charge 8as rather ind&ced to the other body% so 8e call this process MCharging by Ind&c!onN. Ind&ce% ind&c!on. #re yo& s!ll $ollo8ing 32eacher 8rites on the blacric!on +. Charging by Ind&c!on ,. ?es% /ir. Be$ore 8e proceed to the third part o$ the ac!"ity% let &s loo< at the interac!on o$ the charges in can.
?es% /ir.
3Dra8s the can6c&p set&p5 Let &s bear in 'ind that the electrons in the ato' are 'obile 8hile the ato's n&cle&s are not. /o it is sa$e to ass&'e that 8hen there is an interac!on bet8een charges% the electrons are the ones that 'o"e. O
F.Evaluaton/Pos-Actviy
#nd that is the end o$ o&r disc&ssion on electric charges and charging processes. o8% as an assign'ent% I 8ant yo& to thin< abo&t the proble's at the end o$ the ac!"ity sheet% beca&se that 8o&ld yo&r assign'ent that 8ill be s&b'i1ed $or ne)t 'ee!ng. Is that clear ?es% sir. o8% ret&rn the 'aterials to 'e and I 8ill sign yo&r ac!"ity sheets as yo&r e)it !c
Goodbye% Gaea
I. #ssign'entE"al&a!on (. Car $actories charge their paint 8ith a nega!"e charge and the body o$ the car 8ith a posi!"e charge in order to sa"e paint. @o8 can this sa"e paint in the pain!ng process Ase yo&r
(. R&bric on #c!"ity Par!cipa!on
Criteria #dherence to Instr&c!ons
, 2he st&dent adheres $&lly to the instr&c!ons and &rges class'ates to do so.
eenness in Obser"a!on
2he st&dent stops doing anything o-6tas< and care$&lly obser"es the ac!"ity.
+ 2he st&dent adheres to so'e o$ the instr&c!ons and 'ay or 'ay not &rge class'ates to do so. 2he st&dent does an o-6tas< ac!"ity and 'anages to obser"e the ac!"ity.
2i'e Eciency
2he st&dent 8or
2he st&dent 8or
( 2he st&dent ne"er adheres $&lly to the instr&c!ons and &rges class'ates to do so. 2he st&dent does o-6 tas
