Mathematics, Grade 3

Unit 1: Counting and Estimating

Skip counting patterns, finding and fixing sequence errors, and estimating with referents.

• Skip counting sequences
• Counting coin values
• Finding errors in sequences

• Estimating with groups of ten and hundred
• Choosing and using a referent

Unit 2: Representing Whole Numbers

Reading, writing, showing, ordering, and composing three-digit numbers.

• Reading numbers and number words
• Writing number words
• Representing numbers with materials

• Ordering three-digit numbers
• Meaning of each digit
• Representing a number different ways

Unit 3: Fractions

Understanding fractions as equal parts, naming them, and comparing like fractions.

• Equal parts and everyday fractions
• Numerator and denominator
• Naming and comparing fractions

Unit 4: Addition and Subtraction

Modelling addition and subtraction and using mental strategies to add and subtract two-digit numbers.

• Modelling and solving problems

• Strategies for adding
• Strategies for subtracting
• Adding and subtracting two-digit numbers mentally
• Estimating sums and differences

Unit 5: Multiplication and Division

First multiplication and division as equal groups, repeated addition and subtraction, and arrays.

• Recognizing multiplication and division
• Multiplication as repeated addition and arrays
• Division as repeated subtraction

• Solving multiplication and division problems

Unit 6: Patterns

Describing, extending, and creating patterns and using pattern rules to solve problems.

• Describing and extending patterns
• Patterns on a hundred chart
• Missing elements and errors
• Solving problems with patterns

Unit 7: Equality

Understanding equations with one unknown and solving them.

• Meaning of the unknown symbol
• Solving equations with one unknown

Unit 8: Measurement

Length, perimeter, mass, and time with standard units and referents.

• Length units and referents
• Drawing and measuring lengths
• Perimeter of shapes

• Mass in grams and kilograms
• Measuring and telling time

Unit 9: 2-D Shapes and 3-D Objects

Classifying polygons and describing and building 3-D objects.

• Classifying polygons

• Identifying and describing 3-D objects
• Counting parts and building objects

Unit 10: Data

Organizing data and constructing and interpreting bar graphs.

• Organizing data with tallies and line plots

• Constructing and interpreting bar graphs