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Index www.parinti.com > Copiii >7-13 ani > o problema cu...probleme ( mate cl a II a )
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autor o problema cu...probleme ( mate cl a II a )     
ddadriana




Locatie: Germania

09.03.2008 5:24     citat 

Binenteles ca i-am dat. A urmat un hohot de ris, cind a auzit ca a b si c sint cifre, asa cum ma asteptam, din cauza ca acelea sint litere, si nici de cum cifre.
In al doilea rind in clasa 3, fac socoteli pina la 1000, si nici decum nu pest 2000, si a refuzat sa o faca.
Parerea mea este, ca se preda, cu intentie la un nivel atit de ridicat, ptr ai ajuta numai pe cei supradotati, iar cei cu o inteligenta normala ramin fara nici o perspectiva, de-a pricepe ceva. Aceasta este o condamnare la prostie a unui popor intreg. Din pacate eu pot sa-l cred pe res, ca sint copii in clasa 9, care nu stiu sa faca nici un fel de operatie matematica, daca se apuca dupa un an jumate de scolala sa faca astfel de probleme complicate.


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res





09.03.2008 6:21     citat 

----------
mamaluieric a scris:
res dragule, ai iesit la pensie?? sau de ce copii ai dat? un copil de clasa a 3-a-4-a ar trebui cel putin sa faca astfel de probleme pana si in germania.
dadriana, i-ai dat problema fiicei tale?
----------

nemtii sunt mai destepti trag cu ochiul


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arond





10.03.2008 3:11     citat 

----------
mianda a scris:
Multumesc...
Inca una!
O carte si un pix costa2300 lei.Daca micsoram pretul pixului cu 200 lei si marim cu 400 lei pretul cartii, atunci cartea ar deveni de 4 ori mai scumpa decat pixul. Cati lei costa fiecare?
Tot clasa a 2-a!
----------

Asta chiar nu e o problema pentru clasa a doua pentru ca in clasa a doua abia se fac adunari si scaderi cu trecere peste ordin, pana la o mie. Inmultirile si impartirile se fac in clasa a treia, prin orice metoda s-ar dori a fi ele predate. E clar ca nu e respectata programa scolara!
In fine, rezolvarea:
Din valoarea totala a pixului si a cartii scadem 200, apoi adunam 400 pentru a obtine segmente de marimi egale:
2300 - 200 = 2100
2100 + 400 = 2500
Se obtin 5 segmente de marimi egale:

2500 : 5 = 500
Fiecare segment valoreaza 500 de lei.
Pretul pixului: 500 + 200 = 700
Pretul cartii: 500 x 4 = 2000 si 2000 - 400 = 1600.
Proba: 700 + 1600 = 2300.

Si, intre noi fie vorba... ce pix destept si ce carte ieftina scot limba


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danas





10.03.2008 3:40     citat 

Pentru copilul meu, care e clasa doua, problema a fost "limba straina", habar nu a avut!
confuz Si eu care ma gandeam ca-i supradotat?
Pentru mine, aste nu sunt probleme pentru clasa a doua.


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mianda




Locatie: Gorj

10.03.2008 4:19     citat 

Abia acum am citit raspunsurile voastre. Multumesc celor care au incercat sa ma jute. Am renuntat total la a mai incerca macar sa explic astfel de probleme...pur si simplu nu le vom face!
Mentionez ca sunt probleme propuse spre rezolvare, dar nu sunt obligatorii.Unele dintre ele sunt chiar dragute, dar altele...cu dureri de cap!


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res





10.03.2008 4:30     citat 

----------
arond a scris:
----------
mianda a scris:
Multumesc...
Inca una!
O carte si un pix costa2300 lei.Daca micsoram pretul pixului cu 200 lei si marim cu 400 lei pretul cartii, atunci cartea ar deveni de 4 ori mai scumpa decat pixul. Cati lei costa fiecare?
Tot clasa a 2-a!
----------

Asta chiar nu e o problema pentru clasa a doua pentru ca in clasa a doua abia se fac adunari si scaderi cu trecere peste ordin, pana la o mie. Inmultirile si impartirile se fac in clasa a treia, prin orice metoda s-ar dori a fi ele predate. E clar ca nu e respectata programa scolara!
In fine, rezolvarea:
Din valoarea totala a pixului si a cartii scadem 200, apoi adunam 400 pentru a obtine segmente de marimi egale:
2300 - 200 = 2100
2100 + 400 = 2500
Se obtin 5 segmente de marimi egale:

2500 : 5 = 500
Fiecare segment valoreaza 500 de lei.
Pretul pixului: 500 + 200 = 700
Pretul cartii: 500 x 4 = 2000 si 2000 - 400 = 1600.
Proba: 700 + 1600 = 2300.

Si, intre noi fie vorba... ce pix destept si ce carte ieftina scot limba
----------


eu as fi facut-o simplu si anume : (x-200) * 4 = y+400 si x +y=2300. Daca adunam cele doua iese 5*x = 3500 , de unde x = 700 si deci y = 2300 - 700 = 1600, dar astfel de calcule sunt deosebit de grele si pentru clasa a IX-a trag cu ochiul
Un copil de clasa a II-a ar fi ivata pur si simplu rezolvarea pe dinafara desigur folosind metoda segmentelor , fara sa priceapa ceva cum nici eu n-am inteles logica acelor operatii de adunare si scadere sau de ce sa impart la 5 segmente si nu la 7 de exemplu de 300 fiecare . Daca eu nu pot intelege , oare un copil de clasa a II-a cum poate ? surprins
Din practica pe care o am cu elevii va spun ca el invata pe dinafara si apoi uita cum e si normal , ajungand in clasa a 9-a sa nu mai poata face operatii matematice foarte simple , ba chiar sa nu posede o minima logica matematica .


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CHRISSDY




Locatie: Locul dintre lumina si speranta
Copii
Di: 23 ani, 7 luni

10.03.2008 5:08     citat 

Metoda grafica prezentata de Cory si modul de explicare al Adrianei sunt cele mai folosite precum si rezolvarea data de Around pentru cealalta problema,cam asa se lucreaza si aici cu diferentza ca intai lucreaza in clasa metodele folosite si abia dupa au tema legat de ce au facut in saptamana precedenta.

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mamaluieric




Locatie: germania
Copii
Eric: 21 ani
Hanna: 17 ani, 7 luni

10.03.2008 6:24     citat 

scuze pt. confuziile create, m-am prins prea tarziu. eu m-am referit la prima problema ca ar trebui orice copil de clasa 3-a, 4-a s-o faca jenat
scuze inca o data!


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ddadriana




Locatie: Germania

10.03.2008 9:47     citat 

citat ema_e:
----------
citat:
Partea care ma depasetse la nivel de explicatii e cum faci un cupil de 4 ani sa priceapa ca daca A>B B>C atunci A>C.
----------

Daca tii neaparat sa i-l faci sa inteleaga aceasta relatie, poti so o faci, prin comparatie directe cu obiecte, repetata pina deduce singur, si asta numai daca colaboreaza. Treburile astea le invata copii la lada cu jucarii, si nu la masa cu caietul si creionul in mina.


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jupiter





11.03.2008 8:43     citat 

Foarte greu pentru clasa a II-a.
Copilul meu este clasa a III-a, la scoala le-a dat un singur exemplu fara sa lucreze cu ei, nu au inteles cum se rezolva, sincer... nici eu nu am reusit sa il fac sa inteleaga.
Explicatiile voastre ma ajuta sa il fac sa inteleaga mai usor.


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vyronis





03.05.2021 8:47     citat 

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vyronis





03.08.2021 4:37     citat 

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vyronis





30.09.2021 12:25     citat 

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vyronis





02.12.2021 7:03     citat 

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vyronis





22.01.2022 9:16     citat 

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