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# equations

## Number families and relationships

• Units of Work
• Number and Algebra
• Level Two

The purpose of this unit of three lessons is to develop an understanding of how the operations of addition and subtraction behave and how they relate to one another.

This is the fourth in a series of algebra units focusing on using symbols and expressions to think mathematically. It complements algebra student e-ako 7.

This unit follows:

The units that follow this unit are:

## Inequality symbols and relationships

• Units of Work
• Number and Algebra
• Level One

The purpose of this unit of three lessons is to develop understanding of how to recognise and record relationships of (equality and) inequality in mathematical situations.

This is the third in a series of algebra units focusing on using symbols and expressions to think mathematically. It complements the content of algebra student e-ako 6.

This unit follows:

• Numerals and Expressions, in which numerals are explored, and the operations of addition and subtraction are introduced through the recording of number expressions.
• Equality and Equations, in which the concept of an equation as an ‘object that balances’, is introduced.

The units that follow this unit are:

## Equality and Equations

• Units of Work
• Number and Algebra
• Level One

The purpose of this unit of five lessons is to develop the algebraic understanding that the equals symbol, = , indicates a relationship of equivalence between two amounts.

This is the second in a series of units focusing on using symbols and expressions to think mathematically, and it complements algebra student e-ako 3, 4 and 5.

This unit follows:

• Numerals and Expressions, in which numerals are explored, and the operations of addition and subtraction are introduced and recorded using number expressions.

## Using five

• Units of Work
• Number and Algebra
• Level One

The purpose of this unit is to build upon the knowledge students have of combining and separating groupings to five and to use this as a building block to knowing combinations within and up to ten.

These teaching and learning activities also support Student e-ako Place Value 1, pages 4-5 and to complement learning activities found in Book 5, Teaching Addition, Subtraction and Place Value.

This is the second in a series of units developing place value concepts. This unit builds on the previous unit of work:

## Knowing five

• Units of Work
• Number and Algebra
• Level One

The purpose of this unit of five lessons is to lay the foundation for an understanding of grouping and to make connections between the different grouping arrangements and the symbolic recording associated with these.

These teaching and learning activities around knowing five also support the Student e-ako Place Value 1, pages 2 and 3, and complement learning activities found in Book 5, Teaching Addition, Subtraction and Place Value.

This is the first in a series of units developing place value concepts. The units that follow are:

## Can you Kayak?

• Figure It Out Activities
• Number and Algebra
• Level Three

This is a level 3 algebra activity from the Figure It Out theme series.

## Who Am I?

• Figure It Out Activities
• Number and Algebra
• Level Two

This is a level 2 number and algebra activity from the Figure It Out theme series.

## Mystery Amounts

• Figure It Out Activities
• Number and Algebra
• Level Three

These are level 3 algebra and geometry problems from the Figure It Out series.

## Going Around

• Figure It Out Activities
• Number and Algebra
• Level Three

These are level 3 number, statistics, and algebra problems from the Figure It Out series.

## Filling the Gaps

• Figure It Out Activities
• Number and Algebra
• Level Four

These are level 3 number problems and level 4 number and algebra problems from the Figure It Out series.