Mathematics, Grade 2

Unit 1: Number

Skip-counting to 100, even and odd numbers, ordinals, numbers to 100 and place value, comparing and estimating, the effect of zero, addition and subtraction to 100, and mental math facts to 18.

• Skip-counting by 2s, 5s, and 10s from multiples
• Skip-counting from other starting points

• Even and odd numbers
• First, second, third

• Showing numbers to 100
• Tens and ones
• Comparing and ordering to 100
• Estimating to 100

• Adding and subtracting zero

• Personal strategies for adding to 100
• Personal strategies for subtracting to 100
• Solving addition and subtraction problems
• Order does not change a sum
• Order can change a difference
• Doubles and building on a double
• Making 10 and one or two more or less
• Using addition to subtract

Unit 2: Patterns and Relations

Increasing patterns, the meaning of equality and inequality, and recording them with the equal and not-equal symbols.

• Describing increasing patterns
• Reproducing, extending, and creating increasing patterns

• The meaning of equal and not equal
• Writing the equal and not-equal signs

Unit 3: Shape and Space

Days and months, non-standard measurement of length and mass, comparing and ordering by attribute, measuring by iteration, and describing and building 3-D objects and 2-D shapes.

• Days in a week and months in a year

• Bigger length units, fewer needed
• Bigger mass units, fewer needed
• Comparing and ordering by length and height
• Comparing and ordering by mass
• Measuring with many copies of a unit
• Measuring with one unit moved along

• Describing and comparing 3-D objects
• Building 3-D objects
• Describing and comparing 2-D shapes
• Building 2-D shapes

Unit 4: Statistics and Probability

Gathering and recording data, and constructing and interpreting concrete graphs and pictographs.

• Gathering and recording data
• Making and reading graphs