Mathematics teaching and learning has movedaway from a mechanical view of mathematics,to onewith an emphasis on problem solving,understandingand communicating mathematically with others.Inthe past children have been mainly taughtalgorithmic formulae and repeatedly practiced suchan approach,in tasks that have been removed frommeaningful contexts and with an expectation ofworking individually.They are now,however,expected to work with others to solve problems,totrial strategies,and to find effective strategies thatwork for them.