किसी समुदाय या संगठन के भीतर ऐसा नेता जिसे उसके कार्य या नेतृत्व सेवाओं के लिए वित्तीय भुगतान नहीं किया जाता है, उसे क्या कहा जाता है?

'Developing an understanding about patterns is considered essential for teaching algebra'. Which of the following represents the correct reason for the given statement?

Which among the following is/are the purpose of formative assessment? (a) Making assessment a part of teaching. (b) Ranking and placement of children. (c) Providing feedback to the children.