Learning Lynx
Free Educational Resources for Homeschoolers: Who said learning has to cost anything?
Tuesday, February 9, 2010
Reflecting vs Refracting Telescopes
http://my.hrw.com/sh/hlc/0030358310/student/ch03/sec03/qc02/hlc03_03_q02fs.htm
vs
http://my.hrw.com/sh/hlc/0030358310/student/ch03/sec03/qc03/hlc03_03_q03fs.htm
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