20. Posn Util
Utility functions for posns. Accessing functions defined in other files.
20. Using Structures
Remembering or returning more than one thing. For example, coordinates.
20. Libraries
How to make a library of functions that you can use in other files.
20. Troubleshoot
Things that can go wrong using libraries.
20. Posn Math
A three page worksheet on doing conceptual math with posns.
20. Posn Math Programming
Mathy exercises with posns.
20. Click Circle
A circle moves around the screen randomly. You win if you can click on it.
20. Click Circle Questions
Brief explanation of how to stop animations and show a win screen.
20. Silly Square
A simply silly ‘game’ to practice win conditions.
20. Tightrope
A square changes color as you balance between two circles.
20. Click Rectangle
Click on the rectangle and it moves to a new position.
20. Chase
A simple game where a square chases the mouse.
20. Map Image
Changing the colors in a picture, pixel by pixel.
20. Color Enhancing
One exercise working with color.
20. Review
Review questions on posn and color.
20. Ball Driving
Move the ball around the screen with a little control panel. Win when you get inside the target.
Advanced: Aimbooster
A simplified aim-and-click practice.
Troll Quiz Practice
A simple example of something you should be able to do.