Procedural Writing

Today we started learning about a writing form called procedural writing. I kicked off the unit this morning with a really cute activity. I tell the kiddies that I am going to give them instructions that they need to follow carefully.
Here are my instructions:
Draw a square, next draw a triangle, then draw a rectangle and finally draw a circle.
I then ask all kids to reveal the house that they made. Nineteen kiddies look at me very confused since they all just had four shapes drawn randomly beside each other on a piece of paper.
Lesson learned... instructions (or procedures) need to be very clear and detailed!