选择题1.已知 A、B 是平面 a 外的两点,在 a 内与 A、B等距离的点的集合不可能是( ).A.一条直线 B.一个平面C.空集 D.只有一个元素(新编题.其创新性在于以集合的观点(语言)来考查面面关系.考生应首先弄清空间中距 A、B 等距离的点的集...选择题1.已知 A、B 是平面 a 外的两点,在 a 内与 A、B等距离的点的集合不可能是( ).A.一条直线 B.一个平面C.空集 D.只有一个元素(新编题.其创新性在于以集合的观点(语言)来考查面面关系.考生应首先弄清空间中距 A、B 等距离的点的集合是线段 AB 的垂直平分面,再考虑 a 与该平面的关系)2.在空间,与边长均为3 cm 的△ABC展开更多
The basic assumption of reform mathematics isthat"no one can teach mathematics".Therefore,theimportant teachers’ role is to stimulate students tolearn mathematics and support their development.Open-ended pr...The basic assumption of reform mathematics isthat"no one can teach mathematics".Therefore,theimportant teachers’ role is to stimulate students tolearn mathematics and support their development.Open-ended problem solving is an instructionalstrategy that creates interest and stimulates creativemathematical activity in the classroom throughstudents’ collaborative work.Lessons using open-ended problem solving emphasize the process ofproblem solving activities rather than focusing on theresult.展开更多
文摘选择题1.已知 A、B 是平面 a 外的两点,在 a 内与 A、B等距离的点的集合不可能是( ).A.一条直线 B.一个平面C.空集 D.只有一个元素(新编题.其创新性在于以集合的观点(语言)来考查面面关系.考生应首先弄清空间中距 A、B 等距离的点的集合是线段 AB 的垂直平分面,再考虑 a 与该平面的关系)2.在空间,与边长均为3 cm 的△ABC
文摘The basic assumption of reform mathematics isthat"no one can teach mathematics".Therefore,theimportant teachers’ role is to stimulate students tolearn mathematics and support their development.Open-ended problem solving is an instructionalstrategy that creates interest and stimulates creativemathematical activity in the classroom throughstudents’ collaborative work.Lessons using open-ended problem solving emphasize the process ofproblem solving activities rather than focusing on theresult.