Computer Science Level 1 - Blocks

Unit 6 - Knowing Your Location

# Lesson 3: Drive to Number ‘1’

• Reset the Playground to move the VR Robot back to the starting position.
• Now, the VR Robot will turn around and return to the number ‘1’ once it reaches number ‘31’ on the Number Grid Map Playground.
• Remove the [Stop driving] block and replace it with the following blocks.
• Note that the second [Wait until] block contains a <Less than> block instead of a <Greater than> block. This is because the VR Robot is now driving down the Y axis and the numbers are becoming more negative. The VR Robot will stop once the Y-values are LESS than -900.
• Launch the Number Grid Map Playground if it is not already open, and run the project.
• Watch the VR Robot drive to number ‘1’ on the Number Grid Map Playground.
• In this project, the VR Robot drives to the number ‘1’ on the Number Grid Map Playground. Since the Y-values are decreasing as the VR Robot drives to the number ‘1,’ the project uses a <Less than> block.
• The VR Robot will stop once its Y-value is less than the Y-value of the coordinate that the indicated number is on. Since the Y-value of the number ‘1’ is -900, the VR Robot will stop driving once the Y-value is less than -900.