From YouTube, produced by MuchoMath This video discusses the
properties of addition. The video startes with solving a simple
addition problem using a number line, they then change the order
of the problem. This shows the commutative property for
addition. Then they show commutative using negative numbers.
Then other examples are shown. Then they show problems with
parenthesis, which tells the student to do this part first. This
shows the associative property for addition. More examples are
given. Video is good quality and good for all students as review
or initial learning of the concept.