Decimaster requires users to represent fractions and decimals in various different ways (more info).
Decimaster: matchup 1
Decimaster: matchup 2
Decimaster: matchup 3
Decimaster plus: matchup 1
Decimaster plus: matchup 2
Decimaster plus: matchup 3
Decimaster group: matchup 1
Decimaster group: matchup 2
Decimaster group: matchup 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 nonunit 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 partadder: make your own hard sums
The partadder: generate hard sums
The partadder

The TakeAway Bar helps users solve subraction problems by partitioning (more info).
The takeaway bar: make your own hard subtractions
The takeaway bar: generate hard subtractions
Takeaway 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
