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307-DIUT maktabning boshlang’ich sinf o’qituvchisi Karayeva Rahima Xurramovnaning 3 “ G ” -sinfda matematika fanidan 1-soatli dars ishlanmasi Mavzu: Matematika-bu qanday fan? 19.10.12. Matematika . Mavzu : matematika – bu qanday fan?. Natural sonlar deganda nimani tushunasiz ?.
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307-DIUT maktabning boshlang’ich sinf o’qituvchisi Karayeva Rahima Xurramovnaning 3 “G”-sinfda matematika fanidan 1-soatli dars ishlanmasi Mavzu: Matematika-bu qanday fan? 19.10.12
Natural sonlardegandanimanitushunasiz? 0 1 2 3 4 5 6 7 8 9 Rasmdatasvirlanganharbirshaklningnominiayting.
Misollarniustunshaklidatushuntirishbilanyeching. 83-54 84-65 29+46 61+29 38+46 74-18
8 3 2 9 - + 5 4 5 4 2 9 8 3 6 1 9 0 9 0 + - - 2 9 2 9 6 1 9 0 6 1 2 9
8 4 1 9 - + 6 5 6 5 1 9 8 4 3 8 8 4 8 4 + - - 4 6 4 6 3 8 8 4 3 8 4 6
2 9 7 5 7 5 + - - 4 6 4 6 2 9 7 5 2 9 4 6 7 4 5 6 - + 1 8 1 8 5 6 7 4
Geometrikshakllarningtomonlariuzunliklariyig`indisini toping. a= 4 sm, b= 9 sm a= 7 sm a= 5sm, b= 4sm, c=6sm
a=4 sm, b=9 sm Yechish: P=a+b+a+b P=4+9+4+9=26 (sm) Javob: P=26sm.
a=5 sm, b=4 sm, c=6 sm Yechish: P=a+b+c P=5+4+6=15 (sm) Javob: P=15sm.
a=7 sm Yechish: P=a+a+a+a P=7+7+7+7=28 (sm) Javob: P=28sm.
2+2+2+2+2=10 2∙ 5 = 10
3+3+3+3=12 3 ∙ 4 = 12
4 + 4 = 8 4 ∙ 2 = 8
8 : 4 = 2 8 : 2 = 4
6 : 2 = 3 6 : 3 = 2
10 : 2 = 5 10 : 5 = 2