{"id":1033,"date":"2017-02-13T09:08:16","date_gmt":"2017-02-13T14:08:16","guid":{"rendered":"http:\/\/www.horizon-research.com\/ASSET\/?page_id=1033"},"modified":"2025-10-29T16:35:43","modified_gmt":"2025-10-29T20:35:43","slug":"student-experience-2","status":"publish","type":"page","link":"https:\/\/www.horizon-research.com\/ASSET\/matter\/driving-questions\/water-in-puddle\/student-experience-2\/","title":{"rendered":"Student Experience 2: Disappearing Handprints"},"content":{"rendered":"<p><a href=\"https:\/\/www.horizon-research.com\/ASSET\/wp-content\/uploads\/2017\/09\/dogdrinking-e1505329172948.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-1524\" src=\"https:\/\/www.horizon-research.com\/ASSET\/wp-content\/uploads\/2017\/09\/dogdrinking-300x283.jpg\" alt=\"dogdrinking\" width=\"150\" height=\"142\" \/><\/a><\/p>\n<a href=\"https:\/\/www.horizon-research.com\/ASSET\/matter\/driving-questions\/water-in-puddle\/student-experience-2\/print\/\" rel=\"nofollow\" title=\"Print\">Print<\/a>\n<h3>Purpose<\/h3>\n<p>To challenge the thinking of students who believe that a liquid absorbs into a surface rather than evaporating.<\/p>\n<h3>Description<\/h3>\n<p>If you have a chalkboard, wet your hand and then make a handprint on the board. As soon as you remove your hand, outline the handprint with a piece of chalk. Ask students to observe what happens to the wet handprint over time <a href=\"\/ASSET\/References\/#Evaporation\" target=\"_blank\" rel=\"noopener\">(Prain et al., 2009)<\/a>.<\/p>\n<h3>Questions to Ask Students<\/h3>\n<ul>\n<li>Why is the handprint getting smaller?<\/li>\n<li>Where did the water go?<\/li>\n<\/ul>\n<h3>Student Thinking<\/h3>\n<p>Some students may still think that the water is absorbing rather than evaporating <a href=\"\/ASSET\/References\/#Evaporation\" target=\"_blank\" rel=\"noopener\">(Osborne &amp; Cosgrove, 1983; Prain et al., 2009; Russell et al., 1989; Tytler, 2000; Tytler &amp; Prain, 2007)<\/a>. If they do, try the activity with a surface that all students agree does not absorb water (see Student Experience 3).<\/p>\n<h3>Implementation Tips<\/h3>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>The purpose of this activity is to give students evidence that the water is not absorbing into the surface. Don\u2019t worry about explaining evaporation at this point.<\/li>\n<li>Instead of doing this activity as a demonstration, you can have each student make and outline their own handprint on the chalkboard.<\/li>\n<li>If you don\u2019t have a chalkboard, you or your students can do the same activity with any dark-color construction paper. They can outline with a pencil, crayon, or marker instead of chalk. Depending on the humidity, it should disappear in just a few minutes, especially if student shake the excess water off their hands before making their handprint.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Purpose To challenge the thinking of students who believe that a liquid absorbs into a surface rather than evaporating. Description If you have a chalkboard, wet your hand and then make a handprint on the board. As soon as you remove your hand, outline the handprint with a piece of chalk. Ask students to observe<a class=\"moretag\" href=\"https:\/\/www.horizon-research.com\/ASSET\/matter\/driving-questions\/water-in-puddle\/student-experience-2\/\"> Read the full article&#8230;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"parent":357,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1033","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/pages\/1033","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/comments?post=1033"}],"version-history":[{"count":9,"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/pages\/1033\/revisions"}],"predecessor-version":[{"id":2750,"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/pages\/1033\/revisions\/2750"}],"up":[{"embeddable":true,"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/pages\/357"}],"wp:attachment":[{"href":"https:\/\/www.horizon-research.com\/ASSET\/wp-json\/wp\/v2\/media?parent=1033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}