{"id":2308,"date":"2022-08-02T10:19:49","date_gmt":"2022-08-02T15:19:49","guid":{"rendered":"https:\/\/mathisvisual.com\/?p=2308"},"modified":"2022-08-05T03:43:34","modified_gmt":"2022-08-05T08:43:34","slug":"real-world-integer-subtraction","status":"publish","type":"post","link":"https:\/\/mathisvisual.com\/real-world-integer-subtraction\/","title":{"rendered":"Real World Integer Subtraction"},"content":{"rendered":"\r\n<p><iframe loading=\"lazy\" title=\"Real World Integer Subtraction Through Context | Emerging Integer Subtraction On The Number Line\" width=\"1104\" height=\"621\" src=\"https:\/\/www.youtube.com\/embed\/H1_vKMD540w?wmode=transparent&amp;rel=0&amp;feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\r\n<h2><b>In This Set of Visual Number Talk Prompts\u2026<\/b><\/h2>\r\n<p><span style=\"font-weight: 400;\">Students will explore integer subtraction through a real world contextual situation involving rising and falling water levels compared to sea level.<\/span><\/p>\r\n<h2>String of Related Problems<\/h2>\r\n<p><span style=\"font-weight: 400;\">Present the following subtraction sentences one at a time. Encourage students to use an open number line to defend their answer.\u00a0<\/span><\/p>\r\n<p><span style=\"font-weight: 400;\">The visuals provided here explore the first two subtraction sentences, however <\/span><a href=\"https:\/\/learn.makemathmoments.com\/task\/rising-water-day3\"><span style=\"font-weight: 400;\">Day 3 of the Rising Water unit<\/span><\/a><span style=\"font-weight: 400;\"> provides an additional four (4) visual number talk prompts.<\/span><\/p>\r\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">12 &#8211; 8<\/span><\/p>\r\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">8 &#8211; 12<\/span><\/p>\r\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">5 &#8211; (-1)<\/span><\/p>\r\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">-1 &#8211; (5)<\/span><\/p>\r\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">-3 &#8211; (-7)<\/span><\/p>\r\n<p style=\"text-align: center;\"><span style=\"font-weight: 400;\">-7 &#8211; (-3)<\/span><\/p>\r\n<p><b>Facilitator Note<\/b><span style=\"font-weight: 400;\">: The big idea here is <\/span><b><i>difference<\/i><\/b><span style=\"font-weight: 400;\">. We are looking at the difference between these two values. However, the order matters. Unlike with addition, subtraction does not follow the commutative property. Is the minuend more or less than the subtrahend?\u00a0<\/span><\/p>\r\n<p style=\"text-align: center;\"><b>Minuend \u2212 Subtrahend = difference<\/b><\/p>\r\n<p><span style=\"font-weight: 400;\">When the minuend is greater than the subtrahend, the difference is positive. When the minuend is less than the subtrahend, the difference is negative. Seeing these values on the number line should be helpful to solidify this generalization.<\/span><\/p>\r\n<h2><b>Visual Math Talk Prompt #1<\/b><\/h2>\r\n<p><span style=\"font-weight: 400;\">Students will be prompted with:<\/span><\/p>\r\n<p style=\"padding-left: 40px;\"><b><i>Construct a subtraction sentence to represent and determine the difference in water height from last year to this year. Use a number line to defend your answer.<\/i><\/b><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2314 size-large\" src=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-1024x576.jpeg\" alt=\"Integer subtraction\" width=\"1024\" height=\"576\" srcset=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-1024x576.jpeg 1024w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-300x169.jpeg 300w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-768x432.jpeg 768w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-1536x864.jpeg 1536w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-1104x621.jpeg 1104w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-366x205.jpeg 366w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-534x300.jpeg 534w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-165x92.jpeg 165w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-249x140.jpeg 249w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-232x130.jpeg 232w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-344x193.jpeg 344w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-533x300.jpeg 533w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-405x228.jpeg 405w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001-139x78.jpeg 139w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-02-Math-Talk-1-Image.001.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n<p><span style=\"font-weight: 400;\">This context builds on the work students have already engaged in over the first two days of the <\/span><a href=\"https:\/\/learn.makemathmoments.com\/task\/rising-water\"><span style=\"font-weight: 400;\">Rising Water 6-Day Problem Based Unit<\/span><\/a><span style=\"font-weight: 400;\"> on the Make Math Moments website involving a glacier melting and increasing water levels over time.<\/span><\/p>\r\n<p><span style=\"font-weight: 400;\">In this case, we are emerging the idea of subtraction as a difference between the water height this year compared to last year. <\/span><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2315 size-large\" src=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-1024x576.jpeg\" alt=\"Integer subtraction\" width=\"1024\" height=\"576\" srcset=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-1024x576.jpeg 1024w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-300x169.jpeg 300w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-768x432.jpeg 768w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-1536x864.jpeg 1536w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-1104x621.jpeg 1104w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-366x205.jpeg 366w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-534x300.jpeg 534w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-165x92.jpeg 165w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-249x140.jpeg 249w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-232x130.jpeg 232w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-344x193.jpeg 344w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-533x300.jpeg 533w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-405x228.jpeg 405w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002-139x78.jpeg 139w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-03-Math-Talk-1-Image.002.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n<p><span style=\"font-weight: 400;\">In the first prompt in this string of related problems, we provide students with a higher water level this year than last to result in a positive result. In later prompts in this string, we will do the opposite to result in negative differences.<\/span><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2316 size-large\" src=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-1024x576.jpeg\" alt=\"Integer subtraction\" width=\"1024\" height=\"576\" srcset=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-1024x576.jpeg 1024w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-300x169.jpeg 300w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-768x432.jpeg 768w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-1536x864.jpeg 1536w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-1104x621.jpeg 1104w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-366x205.jpeg 366w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-534x300.jpeg 534w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-165x92.jpeg 165w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-249x140.jpeg 249w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-232x130.jpeg 232w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-344x193.jpeg 344w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-533x300.jpeg 533w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-405x228.jpeg 405w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003-139x78.jpeg 139w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-04-Math-Talk-1-Image.003.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n<p><span style=\"font-weight: 400;\">Although students are able to solve this problem however they choose, we will explicitly share a linear model as a tool to represent thinking so we can leverage that same tool once negative differences come into play later in the string.<\/span><\/p>\r\n<h2><b>Visual Math Talk Prompt #2<\/b><\/h2>\r\n<p><span style=\"font-weight: 400;\">Students will be prompted with:<\/span><\/p>\r\n<p style=\"padding-left: 40px;\"><b><i>Construct a subtraction sentence to represent and determine the difference in water height from last year to this year. Use a number line to defend your answer.<\/i><\/b><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2317 size-large\" src=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-1024x576.jpeg\" alt=\"Integer subtraction\" width=\"1024\" height=\"576\" srcset=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-1024x576.jpeg 1024w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-300x169.jpeg 300w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-768x432.jpeg 768w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-1536x864.jpeg 1536w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-1104x621.jpeg 1104w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-366x205.jpeg 366w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-534x300.jpeg 534w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-165x92.jpeg 165w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-249x140.jpeg 249w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-232x130.jpeg 232w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-344x193.jpeg 344w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-533x300.jpeg 533w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-405x228.jpeg 405w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001-139x78.jpeg 139w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-05-Math-Talk-2-Image.001.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n<p><span style=\"font-weight: 400;\">In the second visual number talk prompt from this string of related problems, we reverse the water heights so that the water level is decreasing from last year to this year. The result is that the difference will be a negative measure and we can explicitly show this on the number line to again promote this model as a tool for thinking as well as a tool to represent thinking.<\/span><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2318 size-large\" src=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-1024x576.jpeg\" alt=\"Integer subtraction\" width=\"1024\" height=\"576\" srcset=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-1024x576.jpeg 1024w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-300x169.jpeg 300w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-768x432.jpeg 768w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-1536x864.jpeg 1536w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-1104x621.jpeg 1104w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-366x205.jpeg 366w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-534x300.jpeg 534w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-165x92.jpeg 165w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-249x140.jpeg 249w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-232x130.jpeg 232w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-344x193.jpeg 344w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-533x300.jpeg 533w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-405x228.jpeg 405w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002-139x78.jpeg 139w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-06-Math-Talk-2-Image.002.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n<p><span style=\"font-weight: 400;\">While it might seem obvious that the result must be a negative number since the water level has decreased from last year to this year, we are again leveraging the number line to build our confidence with the model to help us when the situation becomes more complex in future problems in the string.<\/span><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-2319 size-large\" src=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-1024x576.jpeg\" alt=\"Integer subtraction\" width=\"1024\" height=\"576\" srcset=\"https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-1024x576.jpeg 1024w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-300x169.jpeg 300w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-768x432.jpeg 768w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-1536x864.jpeg 1536w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-1104x621.jpeg 1104w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-366x205.jpeg 366w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-534x300.jpeg 534w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-165x92.jpeg 165w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-249x140.jpeg 249w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-232x130.jpeg 232w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-344x193.jpeg 344w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-533x300.jpeg 533w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-405x228.jpeg 405w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003-139x78.jpeg 139w, https:\/\/mathisvisual.com\/wp-content\/uploads\/2022\/08\/Rising-Water-Day-3-Purposeful-Practice-07-Math-Talk-2-Image.003.jpeg 1920w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/p>\r\n<h2>Want to Explore These Concepts &amp; Skills Further?<\/h2>\r\n<p><b><i>Four (4) additional number talk prompts are available<\/i><\/b><span style=\"font-weight: 400;\"> in <\/span><a href=\"https:\/\/learn.makemathmoments.com\/task\/rising-water-day3\"><span style=\"font-weight: 400;\">Day 3<\/span><\/a><span style=\"font-weight: 400;\"> of the <\/span><a href=\"https:\/\/learn.makemathmoments.com\/task\/rising-water\"><span style=\"font-weight: 400;\">Rising Water problem based math unit<\/span><\/a><span style=\"font-weight: 400;\"> that you can dive into now.\u00a0<\/span><\/p>\r\n<p><span style=\"font-weight: 400;\">Why not start from the beginning of this contextual 5-day unit of <\/span><a href=\"https:\/\/learn.makemathmoments.com\/tasks\"><span style=\"font-weight: 400;\">real world lessons<\/span><\/a><span style=\"font-weight: 400;\"> from the Make Math Moments Problem Based Units page.<\/span><\/p>\r\n<p><span style=\"font-weight: 400;\">Did you use this in your classroom or at home? How\u2019d it go? Post in the comments!<\/span><\/p>\r\n<p><b>Math IS Visual. Let\u2019s teach it that way.<\/b><\/p>","protected":false},"excerpt":{"rendered":"<p>Real World Integer Subtraction Visual Number Talk introduced through the context of rising and falling water levels compared to sea level.<\/p>\n","protected":false},"author":1,"featured_media":2323,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[52,53,32,33,34],"series":[35,42],"class_list":["post-2308","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-number","tag-grade-5","tag-grade-6","tag-grade-7","tag-grade-8","tag-grade-9","series-integers","series-subtraction"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Real World Integer Subtraction Through Context Visual Number Talk<\/title>\n<meta name=\"description\" content=\"Real World Integer Subtraction Visual Number 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