Grade Seven Science

Cell Biology
http://www.cellsalive.com/index.htm
This site includes information on plant and animal cells, mitosis and whole lot more! Great visual descriptions!
Includes scientific method, vocabulary terms related to cell biology, DNA basics, cell biology and the cell cycle.

http://www.ibiblio.org/virtualcell/index.htm
Take the virtual cell tour!

http://cellbio.utmb.edu/cellbio/nucleus.htm
Explains the various functions of the cell nucleus and several links about the cell.

Astronauts
http://kids.msfc.nasa.gov/

Scientists Biographies
http://www.pbs.org/wgbh/aso/databank/

http://www.blupete.com/Literature/Biographies/Science/Scients.htm