Please be sure to provide all students with proper safety gear when doing activities. These links will not necessariloy tell youto have spalsh goggles for any 'wet' activities, or safety glasses for anything which moves (like a motor). I will not list anything which uses dangerous chemicals or generates high voltages/amperage. If you have questions, e-mail me or the author of the webpage you are using.
>Circuit design Project 
>Electroplating pennies(webpage)
>An excellent and inexpensive electric motor(webpage)
>Making simple batteries(webpage)
>Motor, Electromagnet, Speaker(webpage)