World Windows introduces young learners to essential themes and concepts in Science and Social Studies, through National Geographic photography and content. Using non-fiction readings, World Windows helps to develop young learners' fluency in English, and ignites their curiosity about the world around them.
World Windows 1 (Science): Float Or Sink?: Content Literacy, Nonfiction Reading, Language & Literacy EPUB, PDF, TXT, AZW3, MOBI, FB2, DjVu, Kindle电子书免费下载。