What key concepts in mathematics learning did the researchers identify?
The researchers based their study on previous research about factors underlying children’s numerical ability from early years to year 4. They identified five key mathematical concepts to base their investigations on: • logical operations on numbers – the ability of the child to master the concept of the seriation of numbers (to sort cards from the one with fewer trees to the one with the most trees), • counting procedures – to count forward from a lower bound number to a upper bound number (eg 1 to 9). • knowledge of the numerical system – to judge which of the two numbers (written as numerals or words) is the larger and how many tens and units are in two digit numbers (eg 17) and to be able to write a dictated number or read a number written in Arab code. • computation skills – to calculate and solve mathematical operations referring to objects presented in a number problem format; adding, subtracting, dividing and multiplying (eg 6+3=9). • numerical skills – being able to estimate si