# Digital Learning Objects

### Level Four

**Filling Glasses** presents graphs representing liquid filling glasses of different shapes.

Filling glasses: find the right glass

Filling glasses: find the right graph

Filling glasses: create the right glass

Filling glasses: create the right graph

Filling glasses: graphing and comparing

**Visual Linear Algebra** presents a visual model to support students in solving linear algebra equations.

Solving linear algebra equations (variable on one side, positive values only)

Solving linear algebra equations (variable on both sides, positive values only)

Solving linear algebra equations (variable on one side, positive and negative values)

Solving linear algebra equations (variable on both sides, positive and negative values)