Standards for Mathematical Practice that we work on continuously throughout the year are as follows:

1. Make sense of problems and persevere in solving them.
2. Reason abstractly and quantitatively
3. Construct viable arguments and critique the reasoning of others.
4. Model with mathematics.
5. Use appropraite tools strategically.
6. Attend to precision.
7. Look for and make use of structure.
8. Look for and express regularity in repeated reasoning.

add
plus (+)
equals (=)
addend
sum
addition sentence
make 10
doubles +1
doubles -1
subtract
minus (-)
difference
subtraction sentence
count up
fact family
missing addend
part + part = whole
whole - part = part
addend + addend = sum
doubles fact 
related addition facts
related subtraction facts
fact family

Addition Concepts
Related Addition Facts
Count On to Add
Extend Facts to 20
Make 10 to Add
Doubles Facts
Doubles +1; Doubles -1
Three Addends
Four Addends
Subtraction Concepts
Add or Subtract to Compare
Count Back to Subtract
Related Subtraction Facts
Relate Addition and Subtraction
Think Addition to Subtract
Use Addition to Check
Count Up to Subtract
Make 10 to Subtract
Writing a Number Sentence
Fact Families
Missing Addends
Use a Bar Model
Fact Patterns
Problem Solving Strategy: Choose the Operation
Problem Solving Strategy: Two-Step Problems
Problem-Solving Applications: Mixed Strategies