### Counting up to 15 objects and putting them in order (Part 1)

In this lesson, we will practise counting objects to 15 and putting them into order from fewest to greatest.

Skip navigation# Unit Overview: Numbers within 15

## Lessons:

### Counting up to 15 objects and putting them in order (Part 1)

### Counting up to 15 objects and putting them in order (Part 2)

### Counting up to 15 objects and putting them in order (Part 3)

### Knowing one more than a number within 15

### Knowing one fewer than a number within 15

### Applying knowledge of one more and one fewer (Part 1)

### Applying knowledge of one more and one fewer (Part 2)

### Using the guess and check strategy for problem solving

### Ordering and exploring numbers within 15

### Consolidating learning of numbers within 15

10 lessons

In this lesson, we will practise counting objects to 15 and putting them into order from fewest to greatest.

In this lesson, we will continue to practise counting objects to 15 and putting them into order from lowest to greatest.

In this lesson, we will continue to practise counting objects to 15 and putting them into order from lowest to greatest.

In this lesson, we will explore identifying one more than a number within 15 using concrete manipulatives to support understanding.

In this lesson, we will explore identifying one fewer than a number within 15 using concrete manipulatives to support understanding.

In this lesson, we will begin to apply knowledge of one more and one fewer using a numberline to support understanding.

In this lesson, we will continue to apply knowledge of one more and one fewer using a number line and a bead string to consolidate understanding.

In this lesson, we will begin to apply the guess and check strategy to a problem involving numbers within 15.

In this lesson, we will begin to introduce ordinal numbers and explore patterns of numbers within 15.

In this lesson, we will revise our knowledge of key concepts from this unit, including equal to, greater than, less than, more than and fewer than.

Units in Maths

- Early Mathematical Experiences
- Pattern and Early Number
- Numbers within 6
- Addition and subtraction within 6
- Measures
- Shape and sorting
- Calendar and Time
- Numbers within 10
- Addition and subtraction within 10
- Numbers within 15
- Grouping and Sharing
- Numbers within 20
- Doubling and halving
- Shape and pattern
- Addition and subtraction within 20
- Money
- Measures
- Depth of numbers within 20
- Numbers beyond 20

- Doubling and halving
- Addition and subtraction within 10
- Exploring calculation strategies within 20
- Money
- Measures
- 2-D shape, perimeter and area
- Numbers to 50
- Manipulating and calculating with fractions
- Fractions
- Fractions and decimals
- Conceptualising and comparing fractions
- Numbers 50 to 100 and beyond
- Reasoning with large whole numbers
- Converting units of measure
- Numbers to 10
- Solving measure and money problems
- Addition and subtraction within 20
- Addition and subtraction (applying strategies)
- Numbers within 1000
- Place value
- Problem solving with integer addition and subtraction
- Volume
- Positive and negative numbers
- Numbers within 10
- Numbers within 15
- Addition and subtraction within 20
- Measures (1): Length and mass
- Measures (2): Capacity and volume
- Addition and subtraction of 2-digit numbers
- Fractions
- Multiplication and division
- Multiplication and division
- Axioms and arrays
- Prime factor decomposition
- Indices and standard form
- Time
- Addition and subtraction of 2-digit numbers (regrouping and adjusting)
- Area and perimeter
- Numbers and numerals
- Percentages
- Fractions
- Measures: Length
- Numbers beyond 20
- Time
- Securing multiplication facts
- Addition and subtraction within 10
- Measures: Mass
- Number sense and exploring calculation strategies
- Addition and subtraction
- Securing multiplication and division
- Position and Direction
- Pattern and Early Number
- Addition and subtraction word problems
- Fractions
- Decimals
- Multiplication and division: 3 and 4
- Multiplication and division: 2, 5 and 10
- Measures: Capacity and volume
- Addition and subtraction
- Extending calculation strategies and additive reasoning
- Deriving multiplication and division facts
- Calculating with whole numbers and decimals
- Integers & Decimals
- Multiplication and division
- Grouping and Sharing
- Surds and trigonometry
- Numbers within 6
- Numbers within 100
- Exploring calculation strategies
- Time
- Exploring calculation strategies and place value
- Multiplication and division
- Factors and multiples
- Graphs
- Graphs
- Reasoning with 4-digit numbers
- Reasoning with patterns and sequences
- Calculation problems
- Numbers within 20
- Money
- Multiplication and division
- Fractions, decimals and percentages
- Decimals and measures
- Early Mathematical Experiences
- Order of operations
- Depth of numbers within 20
- Numbers to 20
- Addition and subtraction within 20 (comparison)
- Addition and subtraction within 6
- Accuracy and estimation
- Money
- Length and perimeter
- Fractions
- Fractions
- Problem solving with whole numbers and decimals