Class one:How to use button to controll LED
Class two:How to controll six Leds by digital output pins
Class three:How to use various of LEDs to create car traffic light and pedestrian traffic light
Class four:How to use potentiometer to controll the LED on PWN pin
Class five:How to use photocell to control the blinking rate of an LED 
Class six:How to use potentiometer to controll the servo motor
Class seven :How to use tilt switch to controll an LED
Class eight:How to use NPN transistors to create touch switch
Class night:How to use thermistor to controll blink of an LED
Class ten : How to make an old school buzzer game 
class 11: Use potentiometer to control RGB
class 12: Use Relay to switch to control two LED