Can anyone help me find the website of this information?

Question

this is an article about egg shells as chalk. please, i need the reference of this website to be qualified to pass the project. help please. ty ;)

Answer 1

http://kidscrafts.suite101.com/article.c...

http://www.ehow.com/how_2083921_make-egg...

http://www.make-stuff.com/kids/eggshell_...