Level 2 Number Learning Objects

Dynamic Tools.
Dynamic Tools helps users explore fractions of shapes and grids (more info).
Shape fractions
Dynamic fractions
Fraction Fiddle.
Fraction Fiddle helps users explore problems involving fractions (more info).
Fraction fiddle: comparing unit fractions
Number Line.
Number Line helps users to record how they solve addition and subtraction problems using a number line (more info).
Number Line
Scale Matters.
Scale Matters helps users explore numberlines with a variety of scales (more info).
Scale matters: tens
Scale matters: hundreds
Scale matters: simple units Icon.
The Array.
The Array introduces users to the array model of multiplication (more info).
The array
The Difference Bar.
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 Icon.
The Part Adder.
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 Icon.
The Take-Away Bar.
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 Icon.
Wishball.
Wishball is a game involving addition and subtraction with place value (more info).
Wishball: tens
Wishball: hundreds
Wishball challenge: tens
Wishball challenge: hundreds
National Library of Virtual Manipulatives.
NLVM: Fraction manipulatives
Fraction pieces
Fractions: visualising
Fractions: parts of a whole
National Library of Virtual Manipulatives.
NLVM: Number manipulatives
Numberline arithmetic
Numberline bars
Diffy