Level 4 Number Learning Objects

Arrays.
Arrays explores the array model for multiplication and division (more info).
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 (more info).
Design a school
Design your own school
Playground percentages Icon.
Design a neighbourhood
Design a city
Design a farm
Neighbourhood fractions Icon.
Drive.
Drive helps users solve proportional problems with distance and time (more info).
Drive: easy problems
Interger Cruncher.
Integer Cruncher introduces the addition and subtraction of positive and negative integers (more info).
Integer cruncher: addition
Integer cruncher: subtraction
Integer cruncher: addition and subtraction Icon.
Loans and Savings.
Loans and Savings helps users find the nett balance of a loan account and a savings account (more info).
Loans and Savings
Mix up.
Mix Up helps users find averages of percentages (more info).
Mix Up: equal sized
Mix Up: different sized
The Percentage Bar.
The Percentage Bar helps users find percentages of numbers (more info).
The Percentage Bar
Scale Matters.
Scale Matters helps users explore numberlines with a variety of scales (more info).
Scale matters: negatives
Scale matters: range of numbers Icon.
School Canteen.
School Canteen provides a context for estimation and multiplication with decimals (more info).
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 (more info).
Squirt: three containers: level 1
Squirt: three containers: level 2
Squirt: three containers Icon.
Squirt: three containers: complex proportional relationships
The Divider.
The Divider helps users solve division problems by partitioning (more info).
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 (more info).
The Fraction Bar
The Fraction of Fractions Tool.
The Fractions of Fractions Tool helps users find fractions of fractions using an array model (more info).
The Fractions of Fractions Tool
The Multiplier.
The Multiplier helps users solve multiplication problems by partitioning and combining (more info).
The multiplier: make your own hard multiplications
The multiplier: generate hard multiplications
The multiplier Icon.
National Library of Virtual Manipulatives.
NLVM: Fraction manipulatives
Fraction pieces
Fractions: equivalent
Fractions: comparing
Fractions: rectangle multiplication
National Library of Virtual Manipulatives.
NLVM: Number manipulatives
Numberline bars
Diffy
Rectangle division
Rectangle multiplication
Rectangle multiplication: integers
Sieve of Eratosthenes
Circle 99
Circle 0
Circle 3
Pascal's triangle
Learn Alberta.
Learn Alberta: Exploring Number series (more info).
Exploring integers
Exploring linear equations
Learn Alberta.
Learn Alberta: Exploring Fractions and Percentages series (more info).
Exploring fractions