%0 Journal Article %T Textbook Review: An Evaluation of Geological and Environmental Teaching Materials in 5th and 6th Grades Science and Technology Textbooks %A Yu-Hsuan Wang %J Journal of Textbook Research %D 2012 %I National Academy for Educational Research %U http://ej.nict.gov.tw/JTR/v05.1/J06v05n01-05.pdf