Which of the following is an example of teaching arithmetic using heuristics method according to National Curriculum Framework (2005)?
1
Finding the sum of three or more digit numbers by column method of addition
2
Rounding off numbers to the nearest multiples of ten in order to add, subtract or multiply etc.
3
Teaching the use of electronic calculator to students
4
Making students memorize multiplication tables for multiplying large numbers
5
Question Not Attempted