培养学生英语写作能力是发展其思维品质的重要途径。教师在进行写作教学时可以基于Gradual Release of Responsibility模式,通过“集中指导,引导思维路径;针对性指导,发掘写作亮点;合作学习,实现思维碰撞;独立学习,实现智慧生成”,实现...培养学生英语写作能力是发展其思维品质的重要途径。教师在进行写作教学时可以基于Gradual Release of Responsibility模式,通过“集中指导,引导思维路径;针对性指导,发掘写作亮点;合作学习,实现思维碰撞;独立学习,实现智慧生成”,实现由“教”到“学”的转化,培养学生独立写作、独立学习的能力。展开更多
The normality of symmetry property of Cayley graphs of valencies 3 and 4 on the alternating group A5 is studied. We prove that all but four such graphs are normal;that A5 is not 5-CI. A complete classification of all ...The normality of symmetry property of Cayley graphs of valencies 3 and 4 on the alternating group A5 is studied. We prove that all but four such graphs are normal;that A5 is not 5-CI. A complete classification of all arc-transitive Cayley graphs on A5 of valencies 3 and 4 as well as some examples of trivalent and tetravalent GRRs of A5 is given.展开更多
文摘培养学生英语写作能力是发展其思维品质的重要途径。教师在进行写作教学时可以基于Gradual Release of Responsibility模式,通过“集中指导,引导思维路径;针对性指导,发掘写作亮点;合作学习,实现思维碰撞;独立学习,实现智慧生成”,实现由“教”到“学”的转化,培养学生独立写作、独立学习的能力。
基金This work was supported by the National Natural Science Foundation of China(Grant Nos.19831050 and 10161001)by RFDP(2000000102).
文摘The normality of symmetry property of Cayley graphs of valencies 3 and 4 on the alternating group A5 is studied. We prove that all but four such graphs are normal;that A5 is not 5-CI. A complete classification of all arc-transitive Cayley graphs on A5 of valencies 3 and 4 as well as some examples of trivalent and tetravalent GRRs of A5 is given.
