subtraction

In this unit students are asked to investigate mathematical relationships when they select various numbers into be used in 3 circle configuration below and in 6 circle configurations. They will explore both whole number and fractional numbers as they consider how various configurations impact on the relationships between numbers. 

In this unit we look at a range of strategies for solving addition and subtraction problems with whole numbers with a view to students anticipating from the structure of a problem which strategies might be best suited.

This unit introduces students to "The Difference Bar" digital learning object, a tool to help students work out the difference between two numbers by breaking numbers into parts.

This unit is for students at Stage 6-Advanced Additive of the Number Framework, Curriculum Level 3, i.e. students who have developed more than one part-whole strategy for addition and subtraction and can use these strategies to solve problems involving large numbers.

This digital learning object has two versions, one where difference problems are generated and one where students and teachers can make up their own difference problems. The problems at this level involve solving the difference between 2 two-digit numbers.

This unit introduces students to "The Take-Away Bar" digital learning object, a tool to help students solve subtraction problems by breaking numbers into parts.

This unit is for students at Stage 6-Advanced Additive of the Number Framework, Curriculum Level 3, i.e. students who have developed more than one part-whole strategy for addition and subtraction and can use these strategies to solve subtraction problems involving large numbers.

This digital learning object has two versions, one where subtraction problems are generated and one where students and teachers can make up their own subtraction problems. The problems at this level involve subtracting a two-digit number from a larger two-digit number.

This unit introduces students to "The Take-Away Bar" digital learning object, a tool to help students solve subtraction problems by breaking numbers into parts.

This unit is for students working at Stage 5-Early Additive of the Number Framework, Curriculum Level 2. Student at this level have just started to understand and use part whole thinking to solve problems.

This digital learning object has two versions, one where subtraction problems are generated and one where students and teachers can make up their own subtraction problems. The problems at this level involve subtracting a single digit number from a two-digit number.

This unit introduces students to "The Difference Bar" digital learning object, a tool to help students work out the difference between two numbers by breaking numbers into parts.

This unit is for students working at Stage 5-Early Additive of the Number Framework, Curriculum Level 2, i.e. students who have developed a part-whole strategy for addition and subtraction. Student at this level have just started to understand and use part whole thinking to solve problems.

This digital learning object has two versions, one where difference problems are generated and one where students and teachers can make up their own difference problems. The generated problems at this level involve 2 two-digit numbers where the difference is less than ten and you can make problems to find the difference between any single digit number and any two-digit number.

This unit provides problems that can be used by the teacher when working with groups of students and problems for students to work on independent of the teacher.

This unit follows naturally from the Smart Doubling and Make a Ten units.
In this unit students are encouraged to develop part/whole addition and subtraction mental methods with multi-digit numbers.

In this unit five-based bead strings and number lines are used to solve addition and subtraction problems.  The aim is to get students that use an early additive strategy to solve problems by making up to 10 and on through the ‘ty’ numbers