Mathematical communication refers to an ability to consolidate and organizing mathematical thinking. It also refers to developing a collection of resources for engaging students in writing and speaking about mathematics, whether for the purpose of learning mathematics or of learning to communicate as mathematicians. It is the ability to use mathematical languages to express the mathematical ideas and arguments that are precisely, concisely and logically.

In group tutorial teaching, the students of the class are divided into some homogeneous groups on the basis of their common learning difficulties and identical weaknesses or deficiencies in the acquisition of the learning experiences in some or the other areas or aspects of the subject.

Akanksha wants to become a good mathematics teacher. To be a good mathematics teacher she must have conceptual knowledge, understanding and ability to relate content of Mathematics of real life.

Deductive reasoning is a basic form of valid reasoning. Deductive reasoning, or deduction, starts out with a general statement, or hypothesis, and examines the possibilities to reach a specific, logical conclusion. ‘From General to Particular’ principle applied in Deductive method.

Ten thousands + ten ones + Ten tens 

A machine, on an average, manufactures 250 pens a day. 
In February 2018, number of days=28 days 
Hence total number of pens=28x250=7000 pens

2.17 P.M. + 11 hours = 1.17 A.M. 
1.17 A.M. + 59 minutes = 2.16 A.M. 
Hence, option C is correct.

Given observation, 24, 36, 46, 17, 18, 25, 35 
Arranging in ascending order, we get 
17, 18, 24, 25, 35, 36, 46 
Number of observation, n =7 (odd) 
Now,