# Number Learning Objects

## Level 1

 Cassowary Fractions allows users to explore half and quarter in context (more info). Cassowary fractions Cassowary sanctuary Number Line helps users to record how they solve addition and subtraction problems using a number line (more info). Number Line Number Trains asks users to place numbers in order to form 'trains' (more info). Number trains: numbers 1 to 10 Number trains: numbers 1 to 20 Number trains: numbers 30 to 50 Number trains: numbers 90 to 120 Number trains: skip counting Number trains Scale Matters helps users explore numberlines with a variety of scales (more info). Scale matters: ones The Number Partner helps users find the pairs of numbers that add together to make numbers from 10 to 30 (more info). The number partner NLVM: Fraction manipulatives Fraction pieces Fractions: parts of a whole

## Level 2

 Dynamic Tools helps users explore fractions of shapes and grids (more info). Shape fractions Dynamic fractions Fraction Fiddle helps users explore problems involving fractions (more info). Fraction fiddle: comparing unit fractions Number Line helps users to record how they solve addition and subtraction problems using a number line (more info). Number Line Scale Matters helps users explore numberlines with a variety of scales (more info). Scale matters: tens Scale matters: hundreds Scale matters: simple units The Array introduces users to the array model of multiplication (more info). The array The Difference Bar helps users solve subraction problems by partitioning and comparing (more info). The difference bar: make your own easy subtractions The difference bar: generate easy subtractions Difference bars The Part Adder helps users add numbers by partitioning and combining (more info). The part-adder: make your own easy sums The part-adder: generate easy sums The part-adder The Take-Away Bar helps users solve subraction problems by partitioning (more info). The take-away bar: make your own easy subtractions The take-away bar: generate easy subtractions Take-away bars Wishball is a game involving addition and subtraction with place value (more info). Wishball: tens Wishball: hundreds Wishball challenge: tens Wishball challenge: hundreds NLVM: Fraction manipulatives Fraction pieces Fractions: visualising Fractions: parts of a whole NLVM: Number manipulatives Numberline arithmetic Numberline bars Diffy

## Level 3

 Decimaster requires users to represent fractions and decimals in various different ways (more info). Decimaster: match-up 1 Decimaster: match-up 2 Decimaster: match-up 3 Decimaster plus: match-up 1 Decimaster plus: match-up 2 Decimaster plus: match-up 3 Decimaster group: match-up 1 Decimaster group: match-up 2 Decimaster group: match-up 3 Design Briefs explores fractions and decimals in the context of proportions of areas (more info). Design a park Design your own park Park fractions Divide It Up helps users explore grouping to solve division problems (more info). Divide it up: kittens Divide it up: hardware Divide it up: puppies Divide it up: grouping tool Divide it up: sharing tool Fraction Fiddle helps users explore problems involving fractions (more info). Fraction fiddle: tool Fraction fiddle: matching cake fractions Fraction fiddle: comparing non-unit fractions Fraction fiddle: hit the apple Fraction fiddle: shoot the hoop Fraction fiddle: reach the target Number Line helps users to record how they solve addition and subtraction problems using a number line (more info). Number Line Pobble Arrays uses an array model to explore factors and multiples (more info). Pobble arrays: make multiples Pobble arrays: find a factor Pobble arrays: find two factors Scale Matters helps users explore numberlines with a variety of scales (more info). Scale matters: tenths Scale matters: tens of thousands Scale matters: hundredths Scale matters: range of numbers Squirt helps users explore and express proportional relationships (more info). Squirt: two containers: level 1 Squirt: two containers level 2 Squirt: two containers The Difference Bar helps users solve subraction problems by partitioning and comparing (more info). The difference bar: make your own hard subtractions The difference bar: generate hard subtractions Difference bars The Multiplier helps users solve multiplication problems by partitioning and combining (more info). The multiplier: make your own easy multiplications The multiplier: generate easy multiplications The multiplier The Part Adder helps users add numbers by partitioning and combining (more info). The part-adder: make your own hard sums The part-adder: generate hard sums The part-adder The Take-Away Bar helps users solve subraction problems by partitioning (more info). The take-away bar: make your own hard subtractions The take-away bar: generate hard subtractions Take-away bars Wishball is a game involving addition and subtraction with place value (more info). Wishball: whole numbers Wishball: tenths Wishball: hundreths Wishball: thousandths Wishball: ultimate Wishball challenge: whole numbers Wishball challenge: tenths Wishball challenge: hundredths Wishball challenge: thousandths Wishball challenge: ultimate NLVM: Fraction manipulatives Fraction pieces Fractions: visualising Fractions: naming Fractions: parts of a whole NLVM: Number manipulatives Numberline arithmetic Numberline bars Diffy Rectangle multiplication Circle 99 Learn Alberta: Exploring Number series (more info).Exploring number patterns

## Level 4

 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 explores fractions and decimals in the context of proportions of areas (more info). Design a school Design your own school Playground percentages Design a neighbourhood Design a city Design a farm Neighbourhood fractions Drive helps users solve proportional problems with distance and time (more info). Drive: easy problems 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 Loans and Savings helps users find the nett balance of a loan account and a savings account (more info). Loans and Savings Mix Up helps users find averages of percentages (more info). Mix Up: equal sized Mix Up: different sized The Percentage Bar helps users find percentages of numbers (more info). The Percentage Bar Scale Matters helps users explore numberlines with a variety of scales (more info). Scale matters: negatives Scale matters: range of numbers 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 helps users explore and express proportional relationships (more info). Squirt: three containers: level 1 Squirt: three containers: level 2 Squirt: three containers Squirt: three containers: complex proportional relationships 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 helps users find fractions of numbers (more info). The Fraction Bar The Fractions of Fractions Tool helps users find fractions of fractions using an array model (more info). The Fractions of Fractions Tool 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 NLVM: Fraction manipulatives Fraction pieces Fractions: equivalent Fractions: comparing Fractions: rectangle multiplication 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: Exploring Number series (more info). Exploring integers Exploring linear equations Learn Alberta: Exploring Fractions and Percentages series (more info). Exploring fractions

## Level 5

 Biscuit Factory explores ratio relationships in the context of gears (more info). Biscuit factory: ratios Biscuit factory: complex ratios Biscuit factory: directions Biscuit factory: create a two-gear system Biscuit factory: create a three-gear system Biscuit factory: gears and speed Drive helps users solve proportional problems with distance and time (more info). Drive: hard problems Squirt helps users explore and express proportional relationships (more info). Squirt: three containers: complex proportional relationships NLVM: Number manipulatives Sieve of Eratosthenes Pascal's triangle Learn Alberta: Exploring Number series (more info). Exploring order of operations Exploring powers of 10 Learn Alberta: Exploring Fractions and Percentages series (more info). Exploring combined percentages Learn Alberta: Exploring Measurement series (more info). Exploring ratios and proportions Exploring square roots