{"id":397,"date":"2012-09-16T17:48:51","date_gmt":"2012-09-16T21:48:51","guid":{"rendered":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/?p=397"},"modified":"2012-09-23T09:13:41","modified_gmt":"2012-09-23T13:13:41","slug":"math-7a-lesson-2-9162012","status":"publish","type":"post","link":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/2012\/09\/16\/math-7a-lesson-2-9162012\/","title":{"rendered":"Math 7A, Lesson 2, 9\/16\/2012"},"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.<\/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 &#8211; b)^2 = a^2 -2ab + b^2<\/li>\n<li>(a^2 &#8211; b^2) = (a + b)*(a &#8211; 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<p><a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P4.pdf\">http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P4.pdf<\/a><\/p>\n<p><a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P5.pdf\">http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P5.pd<\/a><\/p>\n<p>f<a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P6.pdf\">http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P6.pd<\/a><\/p>\n<p>f<a href=\"http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P7.pdf\">http:\/\/blog.newtonchineseschool.org\/wangweidong\/files\/2012\/09\/HW_L2_P7.pdf<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\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":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0},"categories":[11,4,3],"tags":[],"_links":{"self":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/397"}],"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=397"}],"version-history":[{"count":4,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/397\/revisions"}],"predecessor-version":[{"id":406,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/posts\/397\/revisions\/406"}],"wp:attachment":[{"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/media?parent=397"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/categories?post=397"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/blog.newtonchineseschool.org\/wangweidong\/wp-json\/wp\/v2\/tags?post=397"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}