{"product_id":"9781470456757","title":"Rational Numbers to Linear Equations","description":"This is the first of three volumes that, together, give an exposition of the mathematics of grades 9-12 that is simultaneously mathematically correct and grade-level appropriate. The volumes are consistent with CCSSM (Common Core State Standards for Mathematics) and aim at presenting the mathematics of K-12 as a totally transparent subject. The present volume begins with fractions, then rational numbers, then introductory geometry that can make sense of the slope of a line, then an explanation of the correct use of symbols that makes sense of ``variables'', and finally a systematic treatment of linear equations that explains why the graph of a linear equation in two variables is a straight line and why the usual solution method for simultaneous linear equations ``by substitutions'' is correct. This book should be useful for current and future teachers of K-12 mathematics, as well as for some high school students and for education professionals.","brand":"Hung-Hsi Wu","offers":[{"title":"Default Title","offer_id":46776660066622,"sku":"9781470456757","price":0.0,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0784\/4357\/7662\/products\/9781470456757_e25d22bd-3c2d-4d8f-8c61-84dcee695387.jpg?v=1707477010","url":"https:\/\/exclusivebooks.co.za\/products\/9781470456757","provider":"Exclusive Books Online","version":"1.0","type":"link"}