1stgrade acceleratedreader action adventure adventureandadventurers adventurefiction adventurestories africa amazonriver amazonrivervalley animales animalesdelaselvatropical animals annie(fictionalcharacter:osborne) arcticregions armstrongelementary aventuras baumhaus bears brothersandsisters caballerosycaballería castillos castles chapterbooks chapterbooksseriesforsummerreading children'sfiction children'sliterature edadmedia egypt environment fantasyfiction ficciónjuvenil fiction fronterayexploradores frontierandpioneerlife ghosts ghoststories history jack(fictionalcharacter:osborne) juvenilefiction kidnapping kings knightsandknighthood librarians lion lions lotteries magia magic magicinfiction middleages momias mumie mummies mysteryfiction nature newyorktimesbestseller nyt:series_books=2007-03-10 osopolar osos owls piratas pirates piratesinfiction polarbear polarbears polarregions princes queens rainforestanimals rainforests reader reading readinglist rulers selvastropicales spanishlanguagematerials thenaturalworld timetravel timetravelinfiction treehouses treehousesinfiction upelementary viajesatravésdeltiempo vida westernstories zeitreise zoology