Description
About number lines, operations and integers
🎯SAMPLE LEARNING GOALS :
•Represent addition and subtraction of integers on a horizontal number line.
•Reason about addition and subtraction of integers in terms of number-locations.
•Use logical necessity to reason that addition has the opposite effect as subtraction or that adding (or subtracting) a negative integer has the opposite effect as adding (or subtracting) a positive integer.
•Recognize and generate equivalence classes of integer sums and differences.
•Show that a number and its additive inverse (opposite) have a sum of 0.
•Using a net worth context, describe situations that have a positive sum or difference, negative sum or difference, and zero sum or difference.
•View adding a negative as equivalent to subtracting a positive, and explain why this relationship makes sense in contexts such as net worth.
•View subtracting a negative as equivalent to adding a positive, and explain why this relationship makes sense in contexts such as net worth.
•Apply a number line model for addition and subtraction to new contexts.
