Name of Challenge	Description	Grade Level	Difficulty Rating
Mobile Robot Chassis	Become familiar with the Lego components by building a simple mobile robot chassis	6-9
Mobile Robot Programming	Program your robot chassis to move forward, backward, and spin.	6-9
Moving at a Precise Speed	Add gears to your mobile robot to have it move at a precise speed.	6-9
Mobile Robots and Strength	Design and build a mobile robot that can push as many full cans of soda as possible.	6-9
Touch Sensor	Add a touch sensor bumper to your mobile robot and have it react to contact.	6-9
Rotational Sensors and Distance	Add a rotational sensor to your mobile robot and have it move a precise distance.	6-9
Rotational Sensors and Orientation	Use rotational sensors to control how much the mobile robot turns. You will then program the robot to navigate through a maze.	6-9
Light Sensor	Add a light sensor to your mobile robot and program it to detect black lines.	6-9
Firefly - Light bulb Finder	Design a mobile robot that can seek out a light bulb.	6-9
Remote Control Car	Use touch sensors and a light sensor to remotely control a mobile robot.	6-9
Line Follower	Design and build a mobile robot to track a wavy black line.	6-9
Lego Clock	Design and build a clock with a minute hand and a second hand.	6-9
Catapult	Design a catapult that can launch a ping pong ball the farthest distance.	6-9
Four-Legged Walker	Design a robot that walks with 4 legs.	6-9
Table Edge Detector	Design and build a mobile robot that can sense the edge of a table but not fall off.	6-9
Sensing Gravity	Design and build a mobile robot that can drive either rightside-up or upside-down. It should sense which is which.	6-9