according to lev vygotsky, the primary cause of cognitive development is?

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1. most of the children speak first meaningful word at the age of

2. a student scored 32%marks in science subjects cut of 300. how much should he score in language papers out of 200 if he is to get overall 46% marks

3. In this question 1st and the last sentences of the passages are numbered 1 and 6. The rest of the passage is split into four parts named P,Q,R,S. These four parts are not given in their proper order.Read the sentences and find out which of the four combinations is correct.(1) Even the smallest insect of the living world is made up of a large number of cells.(P) Furthermore , the cells in this small creatures widely differ in their structure and function .(Q) An ant, or a gnat, for example is composed of hundreds of, thousands of cells. (R)Even a mite has cells making up its skeletal structure.(S)It also has cells dedicated to digestive and reproductive functions.(6) The cell system of small organisms is microscopic but marvellous, isn’t it ?

4. In this question 1st and the last sentences of the passages are numbered 1 and 6. The rest of the passage is split into four parts named P,Q,R,S. These four parts are not given in their proper order.Read the sentences and find out which of the four combinations is correct.(1) Money is not the root of all evils(P) Or, what about the desire for power driving people to horrible crimes ? (Q) Even purposeless cruelty can be seen in many instances of evil behaviour (R) For example , neither teachers nor parents profit in any way by torturing children. (S) The evils of sexual offenders are not motivated by financial gains. (6) No, we can only say that money is the root of some evil.

5. In this question 1st and the last sentences of the passages are numbered 1 and 6. The rest of the passage is split into four parts named P,Q,R,S. These four parts are not given in their proper order.Read the sentences and find out which of the four combinations is correct.(1) The traveller said, "Can you tell me the way to the nearest inn ?"(P) "Do you want one in which you can spend the night?" (Q) "Yes", said the peasant. (R) "Go right down the road and turn to the left." (S) "Yes", replied the traveller. (6) "thank a lot."

6. A pipe can fill a tank in 'x' hours and another pipe can empty it in'y' (y > x) hours. If both the pipes are open , in how many hours will the tank be filled ?

7. If # means adding 6 times the second number to the first number then (1#2)#3 equals:

8. In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.In a strange ______- the production and the consumption of the event become cause for concern. __________wonders whether newer forms of 'non-caring' or violence are appearing. Somehow, silence, even _______ , quietly suppresses a meditation on such events._____________-a professor, I can recollect the number of occasions when my students have cried as we discussed such events in class.____________- society seems so indifferent.Somehow, silence, even_______ quietly suppresses a meditation on such events.

9. In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.In a strange________ the production and the consumption of the event become cause for concern. _________wonders whether newer forms of 'non-caring' or violence are appearing. Somehow, silence, even_______-, quietly suppresses a meditation on such events.__________-a professor, I can recollect the number of occasions when my students have cried as we discussed such events in class. _________ society seems so indifferent._____________- a professor,

10. In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.In a strange _________ the production and the consumption of the event become cause for concern._____________wonders whether newer forms of 'non-caring' or violence are appearing. Somehow, silence, even_______- , quietly suppresses a meditation on such events.______________-a professor, I can recollect the number of occasions when my students have cried as we discussed such events in class. _____________- society seems so indifferent._________ , society seems so indifferent.