First Grade - Key concepts include skills such as the following:
Quickly and accurately adding numbers together that total up to 10 or less and subtracting from numbers up through 10
Understanding the rules of addition and subtraction (for example, 5+2=2+5)
Solving word problems that involve adding or subtracting numbers up through 20
Understanding what the different digits mean in two-digit numbers (place value)
Comparing two-digit numbers using the symbols > (more than), = (equal to) and < (less than)
Understanding the meaning of the equal sign (=) and determining if statements involving addition and subtraction are true or false (for example, which of the following statements are true? 3+3=6, 4+1=5+2)
Adding one and two-digit numbers together
Measuring the lengths of objects using a shorter object as a unit of length
Putting objects in order from longest to shortest or shortest to longest
Organizing objects into categories and comparing the number of objects in different categories
Dividing circles and rectangles into halves and quarters
Second Grade - Key concepts include skills such as the following:
Quickly and accurately adding numbers together that total up to 20 or less or subtracting from numbers up through 20
Solving one or two-step word problems by adding or subtracting numbers up through 100
Understanding what the different digits mean in a three-digit number (place value)
Adding and subtracting three digit numbers
Measuring lengths of objects in standard units such as inches and centimeters
Solving addition and subtraction word problems involving length
Solving problems involving money
Breaking up a rectangle into same-size squares
Dividing circles and rectangles into halves, thirds, or fourths
Solving addition, subtraction, and comparison word problems using information presented in a bar graph
Writing equations to represent addition of equal numbers