Afler an earthquake, 70 people of the affected commun iIi’ are required to be housed in several tents. Each tent is conical in shape, and must be large enough to allow a family of four to live in it and sleep in it. The radius of the floor space ii takes up should be 3 metres, and the tallest human in each family would be around 2 metres. How much material is required to make up the lent?
Solve the problem above, giving the stages involved while doing so.
Solution :
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Give two distinct word problems (pertaining to the town you stay in) represented by
the expression 
Also find the solution to them.
Explain three different ways in which children often regroup the two numbers while undertaking operations on them, using the example of 57 and 38, while solving 57-38.
Give an appropriate example each in support of the statements below. Also justify your choice of example.
i) Classroom relationships become a resource for developing the mathematical
abilities of children.
ii) Each child needs time to reflect on the mathematical concept or process being taught.
iii) Learning experiences should be designed so as to build on existing proficiencies, interests and experiences, for effective mathematics teaching.
iv) The ability to make connections between apparently separate mathematical ideas is crucial for conceptual understanding.
v) Mathematical problems can have diverse solutions.
Give two activities, each requiring different ability levels of the learners, to help them understand the concept of’negative number’. Justify your choice of activities, also explaining how the second activity requires a higher ability level of the learner than the first activity.
Is every natural number a fraction? Is every decimal number a fraction? Give
reasons for your answers.
Give two misconceptions children often have about measurement of time.
Give three errors children commonly make regarding decimal numbers. Further, for any one of these errors, give a series of three activities to help a group of children correct the misconception underlying the error. Also explain how each activity would meet the objective, and how the three activities are connected as a series.