2000 [Houghton Mifflin Science] DiscoveryWorks Grade 4 California Edition -- Teaching Guide (CA)(TE)(Spiral) by William Badders, Lowell J. Bethel, Victoria Fu, Donald Peck, Carolyn Sumners, & Catherine Valentino ***ISBN-13: 9780618008445 ***Condition: Good Used/Used--with some notes & markings @sci08.4/BS12.2b3;1/BS11.3b1;16/BS12.2b5;3>hm.sci