{"id":13317,"date":"2018-08-23T13:13:02","date_gmt":"2018-08-23T03:13:02","guid":{"rendered":"http:\/\/legoeng.local\/?p=13317"},"modified":"2019-04-02T15:15:54","modified_gmt":"2019-04-02T04:15:54","slug":"snail-car","status":"publish","type":"post","link":"http:\/\/legoeng.local\/snail-car\/","title":{"rendered":"Snail Car"},"content":{"rendered":"<p><a href=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/snail.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-13319 size-medium\" style=\"font-size: 17.6px;\" src=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/snail-273x300.jpg\" alt=\"\" width=\"273\" height=\"300\" srcset=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/snail-273x300.jpg 273w, http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/snail-768x845.jpg 768w, http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/snail.jpg 931w\" sizes=\"(max-width: 273px) 100vw, 273px\" \/><\/a><\/p>\n<h2>Challenge<\/h2>\n<p>Use gears to make a motorized car that moves as slowly as possible.<\/p>\n<p>Here are the rules:<\/p>\n<ol>\n<li>Your snail must include a power source such as an EV3 brick or WeDo hub, one or two motors, and one or more gear trains. You may also use craft materials, such as pipe cleaners and tissue paper, for decoration.<\/li>\n<li>Your snail must move forward at a constant pace during the race, though its forward motion can be very slow. In other words, no stopping, no turning, and\u00a0no backing up.<\/li>\n<li>You must calculate the slowdown of your snail&#8211;how many times the motor must turn for the wheels to turn once.<\/li>\n<\/ol>\n<h2>Materials<\/h2>\n<ul>\n<li>LEGO pieces for building a motorized one-motor or two-motor car.<\/li>\n<li>Additional LEGO beams and gears for gear trains<\/li>\n<li>Craft materials for decorating snails<\/li>\n<li>Masking tape for starting line<\/li>\n<\/ul>\n<p><a href=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/DSC03526.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-13318 size-large\" src=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/DSC03526-1024x307.jpg\" alt=\"\" width=\"1024\" height=\"307\" srcset=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/DSC03526.jpg 1024w, http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/DSC03526-300x90.jpg 300w, http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/DSC03526-768x230.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/p>\n<h2><a href=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/Untitled.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-13320 size-medium\" style=\"font-size: 17.6px;\" src=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/Untitled-264x300.jpg\" alt=\"\" width=\"264\" height=\"300\" srcset=\"http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/Untitled-264x300.jpg 264w, http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/Untitled-768x872.jpg 768w, http:\/\/legoeng.local\/wp-content\/uploads\/2018\/07\/Untitled.jpg 902w\" sizes=\"(max-width: 264px) 100vw, 264px\" \/><\/a><span style=\"color: #555555; font-family: Bitter, Tahoma, Helvetica, sans-serif; font-size: 1.5rem;\">Notes for the teacher<\/span><\/h2>\n<ul>\n<li>This activity can be done using MINDSTORMS EV3 or NXT,\u00a0WeDo, BOOST, or Power Functions motors and battery packs.<\/li>\n<li>Before doing this activity, be sure that the students are introduced to gear trains. Depending on the age of the students and the amount of time you wish to devote to this activity, you may want to introduce compound gears and worm gears as well.<\/li>\n<li>If you do not have access to a large supply of gears, you may want to set limits on how many gears each group may use.<\/li>\n<li>You may want to add an additional constraint that the students must demonstrate that their snail moves forward, at least in theory, rather than moving backward (a real possibility, if the gear trains are complex).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Challenge Use gears to make a motorized car that moves as slowly as possible. Here are the rules: Your snail must include a power source such as an EV3 brick or WeDo hub, one or two motors, and one or more gear trains. You may also use craft materials, such as pipe cleaners and tissue [&hellip;]<\/p>\n","protected":false},"author":13,"featured_media":13319,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99],"tags":[112,121,613],"_links":{"self":[{"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/posts\/13317"}],"collection":[{"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/comments?post=13317"}],"version-history":[{"count":0,"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/posts\/13317\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/media\/13319"}],"wp:attachment":[{"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/media?parent=13317"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/categories?post=13317"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/legoeng.local\/wp-json\/wp\/v2\/tags?post=13317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}