Torque

TORQUE = FORCE x DISTANCE

Such as what is the torque of a 3 foot wrench with 100 pounds of force on it?

Also:

If you have a bolt that requires 1000 lb-ft torque and you can only apply 200 pounds of force, what length wrench do you require?

Explain Multi-tasking

Explain My Blocks

Explain what is degree's of freedom

Effector compared to Actuator

Active vs Passive Actuation

Compare Touch to IR/Ultrasound sensors

How does a Switch statement work? 

Understand how these programs work:

http://ev3lessons.com/en/ProgrammingLessons/beginner/Loops.pdf

http://ev3lessons.com/en/ProgrammingLessons/beginner/Switches.pdf

http://ev3lessons.com/en/ProgrammingLessons/beginner/Touch.pdf

http://ev3lessons.com/en/ProgrammingLessons/beginner/Color.pdf

http://ev3lessons.com/en/ProgrammingLessons/beginner/BasicLineFollower.pdf

If you are having difficulty, this is the full collection of labs. Maybe look at the basic ones if you don't understand the ones above.