Ward, Hellen Editor 2nd ed. 176 p. : ill. Hellen Ward ... [et al.]. Previous ed.: London: Paul Chapman, 2005. Includes bibliographical references (p. [171]-173) and index. Science Study and teaching (Elementary) LB 1585.5.G7 TEA 2008 9781847873767 (hbk.) 9781847873774 (pbk.) http://www.loc.gov/catdir/toc/fy0905/2008921690.html http://www.loc.gov/catdir/enhancements/fy0808/2008921690-d.html http://www.loc.gov/catdir/toc/fy0905/2008921690.html http://www.loc.gov/catdir/enhancements/fy0808/2008921690-d.html