1. Introduce PaintPot app:
"Today, you'll build an app that lets you draw on the kitty picture! Or on a picture you take with your camera!"

Demonstrate drag-in of canvas and how you should set its width to "fill parent" and height to, say, 300.
Demonstrate touch event causing a dot to be drawn.
Explain event arguments (parameters). They appear in event handler blocks (e.g. Canvas.Dragged)
DO NOT UNPLUG EVENT ARGUMENTS, but grab value block from My Blocks.

2. Activity: Built the app PaintPot Tutorial from book

You may want to demonstrate Camera component and TakePicture, AfterPicture commands in middle of tutorial.

3. Post-Introductory-Tutorials Worksheet solution

I typically handout worksheet to students and ask them to discuss questions in small groups. Every 5-10 minutes I pull the class together and discuss 1 or 2 of the questions.

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