Ohio's Learning Standards for Mathematics, grades K-2, focuses on the following concepts at each level:

Kindergarten

• More time dedicated to learning numbers in kindergarten than other topics
• Representing and comparing whole numbers, initially with sets of objects
• Describing shapes and space

Course Overview
Key Vocabulary

First grade

• Understanding addition, subtraction, and strategies within 20 
• Understanding whole numbers, how they relate and place value, including grouping in tens and ones
• Understanding measurement and how to measure lengths
• Reasoning about attributes of and composing and decomposing geometric shapes

Course Overview
Key Vocabulary

Second grade

• Extending understanding of base-ten notation
• Building fluency with addition and subtraction
• Using standard units of measure
• Describing and analyzing shapes

Course Overview
Key Vocabulary