Based on Operations and Algebraic Thinking:
Represent and solve problems involving addition and subtraction.
Add and subtract within 20.
Work with equal groups of objects to gain foundations for multiplication.
Numbers and Operations in Base Ten:
Understand place value.
Use place value understanding and properties of operations to add and subtract.
Measurement and Data:
Measure and estimate lengths in standard units.
Relate addition and subtraction to length.
Work with time and money.
Represent and interpret data.
Reason with shapes and their attributes.