Here is a short video covering all three templates available to download.

Four Operations (Template 2)

Blank Operation Template

This PowerPoint looks through how bar the different types of bar models can be used for visual representation. 

This blank template uses pre-made part part whole bar models with blank bar models (at the end) for students to draw their own part-part whole models.

A pdf guide using zero pairs with the four operations of negative numbers

A video overview of the guide progressing onto using zero pairs to Simplifying Algebraic Expressions