{"id":575,"date":"2013-09-15T16:24:24","date_gmt":"2013-09-15T20:24:24","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/?p=575"},"modified":"2013-09-14T14:26:39","modified_gmt":"2013-09-14T18:26:39","slug":"math-7a-lesson-2-9152013","status":"publish","type":"post","link":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/2013\/09\/15\/math-7a-lesson-2-9152013\/","title":{"rendered":"Math 7A, Lesson 2, 9\/15\/2013"},"content":{"rendered":"<p>We covered the following material today:<\/p>\n<ul>\n<li>Scientific Notation or Standard Form<\/li>\n<li>Special Algebraic Rules for Calculations<\/li>\n<li>Expanding Products<\/li>\n<\/ul>\n<p>To represent a number, scientists use the form of A * 10^n where 1 &lt;= A &lt; 10, n is an integer. This is called scientific notation or standard form. The key point is, A must be smalled than 10 and not smaller than 1.<\/p>\n<p>We talked about how to convert from a decimal form to the standard form, and vice versa. We talked about how to perform addition, subtraction, multiplication, and division with two numbers in standard form.<\/p>\n<p>For special algebraic rules, we established the following three rules:<\/p>\n<ul>\n<li>(a + b)^2 = a^2 + 2ab + b^2<\/li>\n<li>(a \u2013 b)^2 = a^2 -2ab + b^2<\/li>\n<li>(a^2 \u2013 b^2) = (a + b)*(a \u2013 b)<\/li>\n<\/ul>\n<p>For expanding products, the key point we went over is the distributive law, using which one should be able to expanding products in any form.<\/p>\n<p>For homework, it is on the Workbook:<\/p>\n<ul>\n<li>Page 4: 11b, 11d, 11f, 12d, 12f, 12h, 15a, 15b, 15c, 15d<\/li>\n<li>Page 5: 18a, 18b<\/li>\n<li>Page 6: 1b, 1d, 2c, 2d, 3d, 3f<\/li>\n<li>Page 7: 4a, 4c, 4e, 5c, 5e, 5f<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>We covered the following material today: Scientific Notation or Standard Form Special Algebraic Rules for Calculations Expanding Products To represent a number, scientists use the form of A * 10^n where 1 &lt;= A &lt; 10, n is an integer. This is called scientific notation or standard form. The key point is, A must be [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[13,4,3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/575"}],"collection":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/comments?post=575"}],"version-history":[{"count":2,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/575\/revisions"}],"predecessor-version":[{"id":577,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/575\/revisions\/577"}],"wp:attachment":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/media?parent=575"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/categories?post=575"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/tags?post=575"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}