Decimaster requires users to represent fractions and decimals in various different ways.
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.
Design a park
Design your own park
Park fractions

Divide It Up helps users explore grouping to solve division problems.
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.
Fraction fiddle: matching cake fractions
Fraction fiddle: comparing unit 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.
Number Line

Pobble Arrays uses an array model to explore factors and multiples.
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.
Scale matters: tenths
Scale matters: tens of thousands
Scale matters: hundredths
Scale matters: range of numbers

Squirt helps users explore and express proportional relationships.
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.
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.
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.
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.
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.
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.
Exploring number patterns

Modeling Numbers helps users to explore numbers using a variety of representations.
Modeling Numbers: 6-digit numbers

Multiplication and Division Basic Facts helps users to fill the gaps in their multiplication and division basic facts.
Multiplication and Division Basic Facts