Level Two

Addition and Subtraction Basic Facts helps users to fill the gaps in their addition and subtraction basic facts.
Addition and Subtraction Basic Facts

Place Value Blocks allows users to build numbers with 1s, 10s, 100s and 1000s blocks.
Place Value Blocks

Modeling Numbers helps users to explore numbers using a variety of representations.
Modeling Numbers: 3-digit numbers

Pasifika Patterns helps users learn about rotational and reflection symmetry.
Pasifika Patterns

NLVM: Data manipulatives
Spinners
Bar chart

The Vile Vendor explores likelihood in the context of a machine which randomly dispenses disgusting drinks.
The vile vendor: questions
The vile vendor: best guess
The vile vendor

Random Or Not explores random events with a focus on long run data being more reliable than short run data.
Random or not: explore numbers of jubes (1:1:1)
Random or not: explore numbers of jubes (1:1) 

NLVM: Number manipulatives
Numberline arithmetic
Numberline bars
Diffy

NLVM: Fraction manipulatives
Fraction pieces
Fractions: visualising
Fractions: parts of a whole

Wishball is a game involving addition and subtraction with place value.
Wishball: tens
Wishball: hundreds
Wishball challenge: tens
Wishball challenge: hundreds