 |
 |
 |
 |
| Bioregional Outdoor Education Project (BOEP) Outdoor Education for K-8 Teachers |
Canyon Country Youth Corps (CCYC) Employment, Education, and Leadership |
Southwest Ed-Ventures (SWED) Adventure Education with a Mission and Expert Guides |
Discovery Institute for Conservation Education (DICE) Place-based Learning about the Colorado Plateau |
National Geographic, November 2003
Trips - Hot or Cold
Most of us have watched sun rays slant in through a window or angle between walls, creating a play of light and shadow that shifts as the Earth rotates. For ancient cultures, the movement of the sun and its shadows served an especially important function on certain days of the year: It helped them track time and the seasons.
TRANSLATE
![[af]](/plugins/content/plg_jatranslate/images/flags/af.png "afrikaans")
afrikaans ![[sq]](/plugins/content/plg_jatranslate/images/flags/sq.png "albanian")
albanian ![[ar]](/plugins/content/plg_jatranslate/images/flags/ar.png "arabic")
arabic ![[be]](/plugins/content/plg_jatranslate/images/flags/be.png "belarusian")
belarusian ![[bg]](/plugins/content/plg_jatranslate/images/flags/bg.png "bulgarian")
bulgarian ![[ca]](/plugins/content/plg_jatranslate/images/flags/ca.png "catalan")
catalan ![[zh]](/plugins/content/plg_jatranslate/images/flags/zh.png "chinese")
chinese ![[zh-CN]](/plugins/content/plg_jatranslate/images/flags/zh-CN.png "chinese simplified")
chinese simplified ![[zh-TW]](/plugins/content/plg_jatranslate/images/flags/zh-TW.png "chinese traditional")
chinese traditional ![[hr]](/plugins/content/plg_jatranslate/images/flags/hr.png "croatian")
croatian ![[cs]](/plugins/content/plg_jatranslate/images/flags/cs.png "czech")
czech ![[da]](/plugins/content/plg_jatranslate/images/flags/da.png "danish")
danish ![[nl]](/plugins/content/plg_jatranslate/images/flags/nl.png "dutch")
dutch ![[en]](/plugins/content/plg_jatranslate/images/flags/en.png "english")
english ![[et]](/plugins/content/plg_jatranslate/images/flags/et.png "estonian")
estonian ![[fi]](/plugins/content/plg_jatranslate/images/flags/fi.png "finnish")
finnish ![[fr]](/plugins/content/plg_jatranslate/images/flags/fr.png "french")
french ![[gl]](/plugins/content/plg_jatranslate/images/flags/gl.png "galician")
galician ![[de]](/plugins/content/plg_jatranslate/images/flags/de.png "german")
german ![[el]](/plugins/content/plg_jatranslate/images/flags/el.png "greek")
greek ![[iw]](/plugins/content/plg_jatranslate/images/flags/iw.png "hebrew")
hebrew ![[hi]](/plugins/content/plg_jatranslate/images/flags/hi.png "hindi")
hindi ![[hu]](/plugins/content/plg_jatranslate/images/flags/hu.png "hungarian")
hungarian ![[is]](/plugins/content/plg_jatranslate/images/flags/is.png "icelandic")
icelandic ![[id]](/plugins/content/plg_jatranslate/images/flags/id.png "indonesian")
indonesian ![[ga]](/plugins/content/plg_jatranslate/images/flags/ga.png "irish")
irish ![[it]](/plugins/content/plg_jatranslate/images/flags/it.png "italian")
italian ![[ja]](/plugins/content/plg_jatranslate/images/flags/ja.png "japanese")
japanese ![[ko]](/plugins/content/plg_jatranslate/images/flags/ko.png "korean")
korean ![[lv]](/plugins/content/plg_jatranslate/images/flags/lv.png "latvian")
latvian ![[lt]](/plugins/content/plg_jatranslate/images/flags/lt.png "lithuanian")
lithuanian ![[mk]](/plugins/content/plg_jatranslate/images/flags/mk.png "macedonian")
macedonian ![[ms]](/plugins/content/plg_jatranslate/images/flags/ms.png "malay")
malay ![[mt]](/plugins/content/plg_jatranslate/images/flags/mt.png "maltese")
maltese ![[no]](/plugins/content/plg_jatranslate/images/flags/no.png "norwegian")
norwegian ![[fa]](/plugins/content/plg_jatranslate/images/flags/fa.png "persian")
persian ![[pl]](/plugins/content/plg_jatranslate/images/flags/pl.png "polish")
polish ![[pt-PT]](/plugins/content/plg_jatranslate/images/flags/pt-PT.png "portuguese")
portuguese ![[ro]](/plugins/content/plg_jatranslate/images/flags/ro.png "romanian")
romanian ![[ru]](/plugins/content/plg_jatranslate/images/flags/ru.png "russian")
russian ![[sr]](/plugins/content/plg_jatranslate/images/flags/sr.png "serbian")
serbian ![[sk]](/plugins/content/plg_jatranslate/images/flags/sk.png "slovak")
slovak ![[sl]](/plugins/content/plg_jatranslate/images/flags/sl.png "slovenian")
slovenian ![[es]](/plugins/content/plg_jatranslate/images/flags/es.png "spanish")
spanish ![[sw]](/plugins/content/plg_jatranslate/images/flags/sw.png "swahili")
swahili ![[sv]](/plugins/content/plg_jatranslate/images/flags/sv.png "swedish")
swedish ![[tl]](/plugins/content/plg_jatranslate/images/flags/tl.png "tagalog")
tagalog ![[th]](/plugins/content/plg_jatranslate/images/flags/th.png "thai")
thai ![[tr]](/plugins/content/plg_jatranslate/images/flags/tr.png "turkish")
turkish ![[uk]](/plugins/content/plg_jatranslate/images/flags/uk.png "ukrainian")
ukrainian ![[vi]](/plugins/content/plg_jatranslate/images/flags/vi.png "vietnamese")
vietnamese ![[cy]](/plugins/content/plg_jatranslate/images/flags/cy.png "welsh")
welsh ![[yi]](/plugins/content/plg_jatranslate/images/flags/yi.png "yiddish")
yiddish