{"show":[{"id":2191,"catid":"88426,70386,26847,75120,24952","title":"平方的非负性","subtitle":"平方的非负性","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/5.png","goals":null,"intro":"一个数的平方是此数与它的本身相乘所得的乘积,这个乘积一定是非负性的。\r\n","ratingnum":0,"rating":0,"hits":38,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":null,"admin":385,"createdtime":1489366002,"updatedtime":1495096032},{"id":492,"catid":"17360,88283,14823,70382,26841,11635,9910,24946,25356,18586,75117,26377","title":"绝对值的非负性","subtitle":"绝对值的非负性","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/2.png","goals":null,"intro":"什么是绝对值的非负性?怎么利用绝对值非负性?这些都是必须掌握的相关绝对值知识。\r\n\r\n","ratingnum":0,"rating":0,"hits":140,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"14929","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":0,"admin":385,"createdtime":1476941660,"updatedtime":1495095974},{"id":500,"catid":"88428,77551,75122","title":"科学计算器的使用","subtitle":"科学计算器的使用","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/5.png","goals":null,"intro":"只有先认识科学计算器,才能更好地使用科学计算器。","ratingnum":0,"rating":0,"hits":355,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":0,"admin":385,"createdtime":1476942004,"updatedtime":1495095902},{"id":2489,"catid":"20152,12342,9922,14843,17365,24957,89989,27238,26852,18632,75128,26389,94132,24956","title":"列代数式","subtitle":"列代数式","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/2.png","goals":null,"intro":"用运算符号把数与字母连接而成的式子,叫做代数式。列代数式时,首先进行正确的分析再划分层次,理清运算顺序,可按语句中的“的”和“与”字来划分。先读先写,后读后写,这样逐层分析题意,列代数式就容易多了。","ratingnum":0,"rating":0,"hits":34,"teachername":"刘红蕾","publisheruid":0,"uid":81,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":null,"admin":385,"createdtime":1492060639,"updatedtime":1495093861},{"id":2196,"catid":"20152,12341,14844,17364,24958,89990,27238,26852,18631,75129,26389,20153,9922","title":"代数式求值","subtitle":"代数式求值","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/4.png","goals":null,"intro":" 一般地,用数值代替代数式里的字母,按照代数式中的运算关系计算得出的结果,叫做代数式的值。\r\n","ratingnum":0,"rating":0,"hits":31,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":null,"admin":385,"createdtime":1489367710,"updatedtime":1495093823},{"id":513,"catid":"20153,12339,77554,25243,17363,89541,89993,27239,26853,18629,75133,26390,94131,25242,77553,95229","title":"同类项、合并同类项","subtitle":"同类项、合并同类项","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/4.png","goals":null,"intro":"多项式中,所含字母相同,并且相同字母的指数也相同的项,叫做同类项。\r\n","ratingnum":0,"rating":0,"hits":217,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":0,"admin":385,"createdtime":1476943281,"updatedtime":1495093808},{"id":514,"catid":"12343,77552,17366,89988,26851,18633,75127,26389,20152,94130,27238,24956","title":"用字母表示数","subtitle":"用字母表示数","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/6.png","goals":null,"intro":"字母可以表示任意的数,也可以表示特定意义的公式,还可以表示符合条件的某一个数,甚至可以表示具有某些规律的数,总之字母可以简明地将数量关系表示出来。\r\n","ratingnum":0,"rating":0,"hits":458,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":0,"admin":385,"createdtime":1476943465,"updatedtime":1495093799},{"id":515,"catid":"20153,94131,9926,27238,26855,24957","title":"探索数与式的规律","subtitle":"探索数与式的规律","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/3.png","goals":null,"intro":"探究数字变化规律的题型,一般题目分为题设和结论两部分,通常题设部分给出一些数量关系,通过观察分析,找出这些关系中存在的规律。这种数学题目本身存在一种数学探索的思想,体现了数学思想从特殊到一般的发现规律。","ratingnum":0,"rating":0,"hits":223,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":0,"admin":385,"createdtime":1476943662,"updatedtime":1495093790},{"id":2197,"catid":"20153,9926,27238,26855,24957","title":"探索图形规律","subtitle":"探索图形规律","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/1.png","goals":null,"intro":"图形规律一般有几何变换型、排列性,具体怎么去探求则需要掌握一定的技巧。","ratingnum":0,"rating":0,"hits":20,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":null,"admin":385,"createdtime":1489368073,"updatedtime":1495093783},{"id":517,"catid":"20152,12340,77553,25239,17365,89992,26879,18630,75132,26439,93699,27239,95228","title":"单项式","subtitle":"单项式","status":4,"type":"normal","price":30,"serializemode":0,"lessonnum":0,"smallpicture":"/dist/images/defaultcover/math/2.png","goals":null,"intro":"数与字母或字母与字母积的式子叫做单项式。(单独的一个数或一个字母也是单项式。)","ratingnum":0,"rating":0,"hits":385,"teachername":"刘红蕾","publisheruid":0,"uid":83,"xd":2,"deletedtime":null,"xk":3,"nj":null,"ver":"","locked":0,"grade":0,"stage":3,"comment":"","remark":"","recommend":0,"admin":385,"createdtime":1476944021,"updatedtime":1495093589}],"xdxk":{"2648":{"name":"小学数学","xd":1,"xk":3},"467":{"name":"初中数学","xd":2,"xk":3},"215":{"name":"初中英语","xd":2,"xk":4},"394":{"name":"初中科学","xd":2,"xk":5},"226":{"name":"初中物理","xd":2,"xk":6},"534":{"name":"初中化学","xd":2,"xk":7},"660":{"name":"初中历史与社会","xd":2,"xk":20}},"count":"60","catname":{"2191":"初中数学","492":"初中数学","500":"初中数学","2489":"初中数学","2196":"初中数学","513":"初中数学","514":"初中数学","515":"初中数学","2197":"初中数学","517":"初中数学"},"ispay":{"2191":0,"492":0,"500":0,"2489":0,"2196":0,"513":0,"514":0,"515":0,"2197":0,"517":0},"fmtime":{"2191":"2017-05-18 16:27","492":"2017-05-18 16:26","500":"2017-05-18 16:25","2489":"2017-05-18 15:51","2196":"2017-05-18 15:50","513":"2017-05-18 15:50","514":"2017-05-18 15:49","515":"2017-05-18 15:49","2197":"2017-05-18 15:49","517":"2017-05-18 15:46"},"videonum":{"2191":1,"492":1,"500":1,"2489":1,"2196":1,"513":1,"514":1,"515":1,"2197":1,"517":1},"pages":" ","page_items":"\n3/6"}
  • 回复@老老保老张工:那咋分配呢? 2019-11-09
  • 大同城区南郊区矿区大同县撤销设立平城区云冈区云州区 2019-11-09
  • WE连续失误 TOP先声夺人10领先 2019-11-07
  • 朝韩首脑共同检阅韩国三军仪仗队 2019-11-07
  • 低调出征奥运:男篮飞赴美国热身 月底前往里约 2019-11-05
  • 《风暴舞》亮相上海电视节 或成年度期待大戏 2019-11-04
  • 口音让他露马脚 背负3条人命公安部B级逃犯被武汉细心民警揪出 2019-11-03
  • 也就想想吧!好象谁无视你得在乎你足球玩的好不好似的。 2019-10-29
  • 股市涨跌都正常,但不能允许欺诈,反正欺诈发现了,国家可以罚款,但股民就白损失了,这是什么规矩? 2019-10-22
  • “三聚氰胺”受害儿童父亲敲诈案再审:不构成犯罪 2019-10-08
  • 萨拉赫,你再不上 埃及队就要回家啦 2019-10-07
  • 北京造林从绿起来美起来到“活”起来 2019-10-06
  • 中国核电逆袭成长走向世界,为国企改革找到创新发展之路。 2019-09-30
  • 中央纪委紧盯节点 4年来通报曝光问题近4000起 2019-09-30
  • 苏格兰一中国留学生遭遇电信诈骗 损失数万英镑 ——凤凰房产海外 2019-09-16