Investigation 1.1 -
This Investigation gives students experiences with rational numbers, ordering numbers, and informal operation computations in a variety of contexts.
Investigation 1.2 -
This Investigation uses temperature measurement to extend number lines to include negative numbers. Students estimate values of positive and negative points on a number line. They develop informal strategies for comparing, ordering, and locating numbers and their opposites on a number line.
There is a high focus on inequalities We went over notes explaining how to graph these on a number line.
Here are some examples. The circle is filled if equal to and not if it is just greater than or less than.
x > 2
x > -2
x < 3