“This is a time when kids are making a really important transition from arithmetic to mathematics,” Neild said.
arith·me·tic Listen to the pronunciation of arithmetic
Middle English arsmetrik, from Anglo-French arismatike, from Latin arithmetica, from Greek arithmētikē, from feminine of arithmētikos arithmetical, from arithmein to count, from arithmos number; akin to Old English rīm number, and perhaps to Greek arariskein to fit
1 a: a branch of mathematics that deals usually with the nonnegative real numbers including sometimes the transfinite cardinals and with the application of the operations of addition, subtraction, multiplication, and division to them b: a treatise on arithmetic2: computation , calculation
math·e·mat·ics Listen to the pronunciation of mathematics
noun plural but usually singular in construction
1 : the science of numbers and their operations, interrelations, combinations, generalizations, and abstractions and of space configurations and their structure, measurement, transformations, and generalizations 2 : a branch of, operation in, or use of mathematics
boil it down, bob, will ya?