Do the frosted cookie activity to introduce the idea that computers will only do exactly what we tell them to.

Do the Robot Race activity to get students practicing writing code.

Have students complete RobotFreestyle.java in eclipse (package zebra.section1).

Rocket.pde in processing (package zebra.section1).

• Introduce students to circle(x, y, r); (make connection between calling this method and calling move() and turn()). If using an older version of processing, use ellipse() instead of circle()
• Ask students to experiment with changing the parameters and running the code to figure out what each of the parameters controls
• Explain x/y coordinates
• Ask students to complete step 1 in Rocket.pde to add stars/moon in the sky
• Ask students to identify where the circles in the rocket are being drawn--they should see the variables rocketX and rocketY in the coordinates
• Briefly explain variables
• Give students the code to make the rocket move (rocketY = rocketY - 1;) to complete step 2
• Give them time to experiment to make the rocket move faster or move sideways