Arduino
Student Coding site: https://edu.codebender.cc/
Projects:
LCD screen: https://www.arduino.cc/en/Tutorial/HelloWorld
Button Simple: https://www.arduino.cc/en/tutorial/button
Three blinking lights: http://www.instructables.com/id/Multiple-Blinking-LED-on-the-Arduino/
One blinking light: https://www.arduino.cc/en/tutorial/blink (http://www.instructables.com/id/Basic-Arduino-Tutorials-01-Blinking-LED/)
Traffic light: http://www.makeuseof.com/tag/arduino-traffic-light-controller/
RGB LED: https://learn.adafruit.com/adafruit-arduino-lesson-3-rgb-leds?view=all
Scratch for Arduino: http://s4a.cat/