N
N.1 Develop number sense.
Add within 10
Add within 20
Addition skill builders
Subtract within 10
Subtract within 20
Subtraction skill builders
Mixed operations
Add within 10
Add within 20
Addition skill builders
Subtract within 10
Subtract within 20
Subtraction skill builders
Mixed operations
PR
PR.1 Use patterns to describe the world and to solve problems.
PR.2 Represent algebraic expressions in multiple ways.
SS
SS.1 Use direct and indirect measurement to solve problems.
SS.2 Describe the characteristics of 3-D objects and 2-D shapes, and analyze the relationships among them.