Kit Includes:

• Arduino Uno R3 - the latest Arduino USB board, fully assembled and tested.
• 6' USB A to B cable
• Miniature breadboard - Excellent for making circuits and connections off the Arduino. 
• Male to Male jumper wires - These are high quality wires that allow you to connect the female headers on the Arduino to the components and breadboard
• Flex Sensor - Originally designed for the Nintendo Power Glove
• SoftPot - Measure position along the softpot by looking at the change in resistance. It's like a touch sensitive volume slider.
• Photocell - A sensor to detect ambient light. Perfect for detecting when a drawer is opened or when night-time approaches.
• Thermistor - A sensor for detecting ambient temperature and temperature changes.
• Tri-Color LED - Because everyone loves a blinky. Use this LED to PWM mix any color you need.
• Standard LEDs - Light emitting diodes make great general indicators.
• Linear trim pot - Also known as a variable resistor, this is a device commonly used to control volume, contrast, and makes a great general user control input.
• Buzzer - Make wonderful, brain splitting noises, alarms, and possibly music!
• 12mm button - Because big buttons are easier to hit.
• 330 Ohm Resistors - 5 current limiting resistors for LEDs, and strong pull-up resistors.
• 10k Ohm Resistors - These make excellent pull-ups, pull-downs, and current limiters.

Documents:

• Arduino Home Page
• Arduino Features
• How ToProgramming Reference
• Arduino Forum