Grade 6 Math

Algebraic Thinking
SolveMe Mobiles
Deep Sea Duel
Pan Balance - Shapes 

Fractions
Fraction Models
Fraction Game
Visual Fractions - A Fractions Modeling Tutorial
Multiply fractions by whole numbers: using models - for teachers | LearnZillion
Equivalent Fractions
Factor Game

Geometry
Isometric Drawing Tool
Cubes
Cube Nets
bhunt
Interactivate: Tessellate!


Multiplication and Division
Concentration 

Coordinates
Interactivate: Simple Coordinates Game 
Interactivate: Maze Game
Interactivate: General Coordinates Game 

Graphs