Constructing Ziggurats

This task is about constructing and drawing a model using isometric paper.
How to do this task
In ancient times people built step pyramids called ziggurats.
 
a) Here is a three block high ziggurat as viewed from one corner.

Use the diagram above to help you build a four block high ziggurat from blocks.
Show your teacher what you have constructed before continuing.
Teacher check: 
b)
On the isometric paper below, draw your four block high ziggurat as viewed from one corner.
 
isometric-grid-3-4.png