Operations
·
Students are
expected to be aware of the existence of positive and negative numbers. The number line is reviewed. Informal addition and subtraction of integers
starts with counting on the number line.
·
umber lines are used in a variety of forms-horizontal,
vertical, and curved. Preformal addition
and subtraction of integers are introduced.
·
Students practice
addition and subtraction of integers in a more formal way. The references to operations change from
language-based to symbolic.
·
Addition,
subtraction, and multiplication of integers are formalized. Division of integers is informally
introduced. Students practice working
with integers within the context of finding a mean in a data set.
·
Students’
knowledge of the coordinate system is expanded with negative numbers. Students plot and interpret points on this
coordinate system. They practice using
the rules for addition, subtraction, and multiplication of integers within the
context of transformations of geometric shapes on the coordinate system.