[LM_NET] Houghton-Mifflin - research based?

[Geneva Johnson <johnsong@OWASSO.K12.OK.US>]

Oh Wise Ones ~

I am looking for information on Houghton-Mifflin Math.  I am needing 
information showing that this is a "research-based" curriculum.  I have 
called the publisher and left messages on voice mail and searched the net.  
I am coming up empty.  Any help would be appreciated.

TIA
 
Geneva Johnson, NBCT 2004
Library Media Specialist
Ator Heights Elementary
Owasso Public Schools
johnsong@owasso.k12.ok.us 

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