Interactive whiteboards (IWB) are rapidly replacing blackboards in the classroom.  There are various types and ways of mounting them.  Ideally the IWB should be mounted or fixed securely.  This makes it easier to keep it synchronized.  IWB's on wheels are better than nothing, but they easily get out of synch if moved even slightly.  A common type of IWB found in New York City schools is called a Smartboard.  Activboards are another common brand.

Interactive Whiteboard (IWB) Links

• What Is an Interactive Whiteboard?
• How Can an Interactive Whiteboard Improve Teaching?
• Help! Some idiot wrote on my whiteboard with permanent marker!  How to remove permanent marker
  

Smartboard links

• What is a Smartboard?
• How to Use SMART Boards
• How to Use a SmartBoard for Educational Purposes
• Smartboard resources
• Smartboard resources 2
• Smartboard secondary school resources
• Smartboards in the classroom
• Smartboards in the Classroom
  Integrating Interactive Whiteboard Technology into the Classroom to Reach the Diverse Learner

Smartboard Ideas for Teaching Science

• Smart Ways To Use the SMARTboard in Science Lessons
• Ideas for the Smartboard - science
• Using the SMARTBoard to Support Science
• Smartboard sites for science
• Science lessons for the Smartboard
• Smartboard resources - secondary science

Other useful links

• Ten Ways To Get Beyond Powerpoint With Classroom Projectors