## Digital Learning Objects

## Arrays

**Arrays** explores the array model for multiplication and division.

Arrays: factor families

Arrays: word problems with products from 10 to 30

Arrays: word problems with products from 30 to 50

Arrays: word problems with products from 35 to 64

Arrays: the tool

## Design Briefs

**Design Briefs** explores fractions and decimals in the context of proportions of areas.

Design a school

Design your own school

Playground percentages

Design a neighbourhood

Design a city

Design a farm

Neighbourhood fractions

## Drive

**Drive** helps users solve proportional problems with distance and time.

Drive: easy problems

## Integer Cruncher

**Integer Cruncher** introduces the addition and subtraction of positive and negative integers.

Integer cruncher: addition

Integer cruncher: subtraction

Integer cruncher: addition and subtraction

## Loans and Savings

**Loans and Savings** helps users find the nett balance of a loan account and a savings account.

Loans and Savings

## Mix Up

**Mix Up** helps users find averages of percentages.

Mix Up: equal sized

Mix Up: different sized

## The Percentage Bar

**The Percentage Bar** helps users find percentages of numbers.

The Percentage Bar

## Scale Matters

**Scale Matters** helps users explore numberlines with a variety of scales.

Scale matters: negatives

Scale matters: range of numbers

## School Canteen

**School Canteen** provides a context for estimation and multiplication with decimals.

School canteen: restock: level 1

School canteen: best buy: level 1

School canteen: two traders: level 1

School canteen: estimate and check: level 1

School canteen: restock : level 2

School canteen: best buy: level 2

School canteen: two traders: level 2

School canteen: estimate and check: level 2

## Squirt

**Squirt** helps users explore and express proportional relationships.

Squirt: three containers: level 1

Squirt: three containers: level 2

Squirt: three containers

Squirt: three containers: complex proportional relationships

## The Divider

**The Divider** helps users solve division problems by partitioning.

The divider: without remainders

The divider: whole number remainders

The divider: solve your own problem

The divider: with or without remainders

## The Fraction Bar

**The Fraction Bar** helps users find fractions of numbers.

The Fraction Bar

## The Fractions of Fractions Tool

**The Fractions of Fractions Tool** helps users find fractions of fractions using an array model.

The Fractions of Fractions Tool

## The Multiplier

**The Multiplier** helps users solve multiplication problems by partitioning and combining.

The multiplier: make your own hard multiplications

The multiplier: generate hard multiplications

The multiplier

## Modeling numbers: decimals

**Modeling Numbers **helps users to explore numbers using a variety of representations.

Modeling Numbers: decimals