{"product_id":"imperfect-subtraction-equations-1","title":"Imperfect Subtraction Equations","description":"\u003cp\u003e\u003cstrong\u003eScratch \u0026amp; Dent Discount:\u003c\/strong\u003e These materials did not pass our strict quality control process, so you get them at a lower price. The error may be a small spot or hair under the laminate on one or more cards, color slightly different from our standard, an image printed slightly askew, or slightly curved laminate. Many teachers can't find the error, but we can! Each packet is complete. \u003ca href=\"https:\/\/maitrilearning.com\/collections\/discounts\" title=\"Montessori scratch and dent materials at a discount\" target=\"_blank\"\u003eSee all of our scratch and dent materials\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eOur Montessori Subtraction Equations give students 16 prepared equations to solve independently with the stamp game, bank game, or other base ten materials. Every minuend and subtrahend has four digits, so students work with units, tens, hundreds, and thousands.\u003c\/p\u003e\n\u003cp\u003eHalf of the equations are static, and half are dynamic, with borrowing. Students build each equation, remove the subtrahend, and find the difference. If they're writing, they can then write the equation and answer in their own math journal.\u003c\/p\u003e\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e16 equation cards: 8 static and 8 dynamic\u003c\/li\u003e\n\u003cli\u003eA small white star on each dynamic equation for easy reference\u003c\/li\u003e\n\u003cli\u003eColor-coded numerals, with a green border for subtraction\u003c\/li\u003e\n\u003cli\u003eNo solutions on the cards\u003c\/li\u003e\n\u003cli\u003eCards are approx. 4¼\" x 2¾\"\u003c\/li\u003e\n\u003cli\u003eEco-laminated with a food-grade laminate and rounded corners\u003c\/li\u003e\n\u003cli\u003eSturdy, clear reclosable bag for teacher storage\u003c\/li\u003e\n\u003cli\u003eBlack and white equation master included (or download the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0734\/7437\/files\/mathequationmaster.pdf?3436125285558251980\" title=\"Printable Montessori math equation master PDF\" target=\"_blank\"\u003eprintable equation master\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0734\/7437\/files\/math.pdf?v=1789746754\" title=\"Montessori math equation cards lesson plan PDF\" target=\"_blank\"\u003eLesson plan\u003c\/a\u003e included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBase ten materials, such as the stamp game or bank game, are not included.\u003c\/p\u003e\n\u003cp\u003eAdd a green \u003ca href=\"https:\/\/maitrilearning.com\/products\/cloth-pouches-for-cards\" title=\"Montessori medium cloth pouches for displaying subtraction equation cards\" target=\"_blank\"\u003emedium cloth pouch\u003c\/a\u003e for color-coded, student-accessible classroom display.\u003c\/p\u003e\n\u003cp\u003eThese cards are also part of our \u003ca href=\"https:\/\/maitrilearning.com\/products\/math-set\" title=\"Montessori math equation card set for all four operations\" target=\"_blank\"\u003eMath Equation Set\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eCreated by a Montessori teacher. Eco-printed in our rural New England office.\u003c\/p\u003e\n\u003cp\u003eMade in the USA. CPSIA compliant.\u003c\/p\u003e\n\u003cdetails class=\"accordion group\" is=\"\"\u003e\n\u003csummary\u003e\u003cspan class=\"accordion__toggle text-lg\"\u003e \u003cspan\u003e\u003cstrong\u003eWhy use prepared subtraction equations?\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"animated-plus group-expanded:rotate\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003ePrepared equations let students work independently. A student can choose a card and start right away, without waiting for you to write a problem. Each time, they practice the same steps with the base ten materials, and they get to see what subtraction really does to a quantity.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"accordion group\" is=\"\"\u003e\n\u003csummary\u003e\u003cspan class=\"accordion__toggle text-lg\"\u003e \u003cspan\u003e\u003cstrong\u003eHow do you use subtraction equation cards?\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"animated-plus group-expanded:rotate\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eFor your first presentation, use the equation master to handwrite your own equation. Then, offer these prepared cards so students can solve problems on their own. The cards don't show solutions, so students find each answer with their materials:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eLay out the minuend, the top number, at the top of the work area.\u003c\/li\u003e\n\u003cli\u003ePhysically remove the subtrahend, the bottom number.\u003c\/li\u003e\n\u003cli\u003eCount what remains to find the difference.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eOnce students have experience with dynamic equations, make photocopies of the equation master so they can create their own math problems.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"accordion group\" is=\"\"\u003e\n\u003csummary\u003e\u003cspan class=\"accordion__toggle text-lg\"\u003e \u003cspan\u003e\u003cstrong\u003eWhat is the difference between static and dynamic equations?\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"animated-plus group-expanded:rotate\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eStatic equations can be solved without any borrowing. Dynamic equations require students to borrow, such as exchanging a ten for ten units. Start with the static equations, then move on to the dynamic equations, which are marked with a small white star.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"accordion group\" is=\"\"\u003e\n\u003csummary\u003e\u003cspan class=\"accordion__toggle text-lg\"\u003e \u003cspan\u003e\u003cstrong\u003eWhat comes after subtraction equations?\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"animated-plus group-expanded:rotate\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eNext, students move on to our \u003ca href=\"https:\/\/maitrilearning.com\/products\/division-equations\" title=\"Montessori short division equation cards\" target=\"_blank\"\u003eShort Division Equations\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"accordion group\" is=\"\"\u003e\n\u003csummary\u003e\u003cspan class=\"accordion__toggle text-lg\"\u003e \u003cspan\u003e\u003cstrong\u003eWhat ages is this for?\u003c\/strong\u003e\u003c\/span\u003e\u003cspan class=\"animated-plus group-expanded:rotate\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/summary\u003e\n\u003cp\u003eTypically ages 4 to 9, once a student has been introduced to subtraction with base ten materials.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Maitri Learning Montessori","offers":[{"title":"Default Title","offer_id":63754035462284,"sku":"dismathlsubt","price":10.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/7437\/files\/mathsubt-a.png?v=1773081605","url":"https:\/\/maitrilearning.com\/products\/imperfect-subtraction-equations-1","provider":"Maitri Learning","version":"1.0","type":"link"}