{"id":1823,"date":"2020-07-14T14:14:57","date_gmt":"2020-07-14T21:14:57","guid":{"rendered":"https:\/\/mathtalk.sdsu.edu\/wordpress\/?page_id=1823"},"modified":"2020-08-04T13:56:43","modified_gmt":"2020-08-04T20:56:43","slug":"proportions-lesson-7-teachers","status":"publish","type":"page","link":"https:\/\/mathtalk.sdsu.edu\/wordpress\/mathtalk-for-teachers\/proportional-reasoning-unit-teachers\/proportions-lesson-7-teachers\/","title":{"rendered":"Proportions Lesson 7 (Teachers)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Making Multiplicative Comparisons<\/h3>\n\n\n\n<p>Kate and Christopher use an applet called Making Pink Paint to solve proportional reasoning problems. They choose amounts of red and white paint to make two batches of paint that are the same shade of pink. In the process, they form ratios by comparing amounts of white paint to red paint multiplicatively.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><a href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/mathtalk-for-teachers\/proportional-reasoning-unit-teachers\/proportions-lesson-7-teachers\/proportions-lesson-7-episode-1-teachers\/\">Episode 1: Making Sense<\/a><\/h5>\n\n\n\n<p>Kate and Christopher make sense of a new applet called Making Pink Paint. They enter different amounts of white and red paint for two batches of paint and compare the shades of pink.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><a href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/mathtalk-for-teachers\/proportional-reasoning-unit-teachers\/proportions-lesson-7-teachers\/proportions-lesson-7-episode-2-teachers\/\">Episode 2: Exploring<\/a><\/h5>\n\n\n\n<p>The students test several methods to make a batch of paint that is the same shade of pink as a batch with 4.5 ounces of white paint and 1.5 ounces of red paint.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><a href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/mathtalk-for-teachers\/proportional-reasoning-unit-teachers\/proportions-lesson-7-teachers\/proportions-lesson-7-episode-3-teachers\/\">Episode 3: Exploring<\/a><\/h5>\n\n\n\n<p>Christopher and Kate draw a diagram to find the amount of white paint to mix with a given amount of red paint to match a certain shade of pink. They develop a new way to think about the problem by forming a multiplicative comparison between the amount of white and red paint in a batch of paint.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><a href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/mathtalk-for-teachers\/proportional-reasoning-unit-teachers\/proportions-lesson-7-teachers\/proportions-lesson-7-episode-4-teachers\/\">Episode 4: Repeating Your Reasoning<\/a><\/h5>\n\n\n\n<p>Kate and Christopher use multiplicative comparisons to make two batches of paint that are the same shade of pink.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-text-color has-background has-vivid-cyan-blue-background-color has-vivid-cyan-blue-color\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Mathematics in this Lesson <a href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-content\/uploads\/proportions-teacher-docs\/proportions-l7-mathematics-in-this-lesson.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"34\" class=\"wp-image-2214\" style=\"width: 34px; vertical-align: middle;\" src=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-content\/uploads\/2020\/07\/pdf.jpg\" alt=\"\"><\/a><\/h3>\n\n\n\n<p class=\"has-medium-font-size\">Common Core Math Standards <input type='hidden' bg_collapse_expand='69e220bc399ab2063819662' value='69e220bc399ab2063819662'><input type='hidden' id='bg-show-more-text-69e220bc399ab2063819662' value=' '><input type='hidden' id='bg-show-less-text-69e220bc399ab2063819662' value=' '><button id='bg-showmore-action-69e220bc399ab2063819662' class='bg-showmore-plg-button bg-blue-button bg-arrow '   style=\" color:white;\"> <\/button><div id='bg-showmore-hidden-69e220bc399ab2063819662' ><\/p>\n\n\n\n<p><a href=\"http:\/\/www.corestandards.org\/Math\/Content\/6\/RP\/A\/1\/\"><strong>CCSS.M.6.RP.A.1<\/strong><\/a>. <span style=\"text-decoration: underline\">Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.<\/span><\/p>\n\n\n\n<p>As this lesson progresses, the students form ratios by multiplicatively comparing amounts of two different quantities: the amount of red paint to the amount of white paint in one batch of pink paint. The ratio represents \u201cpinkness.\u201d The students use a ratio representing \u201cpinkness\u201d of a first batch of paint to find the amount of white paint they must to add to a certain amount of red paint to make a second batch of paint that is the same shade of pink as a first batch of paint. <\/div><\/p>\n\n\n\n<p class=\"has-medium-font-size\">Common Core Math Practices <input type='hidden' bg_collapse_expand='69e220bc39d1a0075338993' value='69e220bc39d1a0075338993'><input type='hidden' id='bg-show-more-text-69e220bc39d1a0075338993' value=' '><input type='hidden' id='bg-show-less-text-69e220bc39d1a0075338993' value=' '><button id='bg-showmore-action-69e220bc39d1a0075338993' class='bg-showmore-plg-button bg-blue-button bg-arrow '   style=\" color:white;\"> <\/button><div id='bg-showmore-hidden-69e220bc39d1a0075338993' ><\/p>\n\n\n\n<p><a href=\"http:\/\/www.corestandards.org\/Math\/Practice\/MP1\/\"><strong>CCSS.MATH.PRACTICE.MP1<\/strong><\/a>. <em>Make sense of problems and persevere in solving them.<\/em><\/p>\n\n\n\n<p>Common Core Practice 1 states that proficient students will <em>\u201canalyze givens, constraints, relationships, and goals,\u201d \u201cmake conjectures\u2026and plan a solution pathway\u201d<\/em>. In this lesson, Kate and Christopher consider a different kind of proportional reasoning problem: mixing amounts of red and white paint to make two batches of paint that are the same shade of pink. As they attempt to make two batches of paint with the same \u201cpinkness,\u201d they first use a solution path from previous lessons.&nbsp; They double, quadruple, and halve both the amount of red paint and white paint of a given batch of pink paint to create a second batch that is the same shade of pink. When the students are asked how much white paint to add to 2 ounces of red paint to make a batch with the \u201cpinkness\u201d of a batch with 1.5 ounces of red paint and 4.5 ounces of white paint, they struggle. The students persist by creating a diagram that, in the end, multiplicatively compares the amount of red paint to the amount of white paint in the given batch <strong>[2:14 in Episode 3]<\/strong>. Once they have persevered to form this new solution path, the students solve a series of similar pink paint problems using the strategy of creating equal ratios of amounts of red and white paint for both batches of paint. <\/div><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background\" href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/\" style=\"background-color:#2d4059\">Home<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background\" href=\"https:\/\/mathtalk.sdsu.edu\/wordpress\/mathtalk-for-teachers\/\" style=\"background-color:#2d4059\">Teachers Home<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-background\" style=\"background-color:#2d4059\">Proportions<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Making Multiplicative Comparisons Kate and Christopher use an applet called Making Pink Paint to solve proportional reasoning problems. They choose amounts of red and white paint to make two batches of paint that are the same shade of pink. In the process, they form ratios by comparing amounts of white paint to red paint multiplicatively. [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":547,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1823","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/pages\/1823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/comments?post=1823"}],"version-history":[{"count":8,"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/pages\/1823\/revisions"}],"predecessor-version":[{"id":2487,"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/pages\/1823\/revisions\/2487"}],"up":[{"embeddable":true,"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/pages\/547"}],"wp:attachment":[{"href":"https:\/\/mathtalk.sdsu.edu\/wordpress\/wp-json\/wp\/v2\/media?parent=1823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}