高中阶段生物学课程在难度和深度上的提升导致学生在学习过程中会出现畏惧难点、动机不足等问题,培养学生成长型思维对于学生生物核心素养的达成以及个人发展有很大的推动力。本文以在生物教学中采用有效的教学策略培养学生的成长型思维...高中阶段生物学课程在难度和深度上的提升导致学生在学习过程中会出现畏惧难点、动机不足等问题,培养学生成长型思维对于学生生物核心素养的达成以及个人发展有很大的推动力。本文以在生物教学中采用有效的教学策略培养学生的成长型思维,按照思维起步、发展、进阶、形成的思维培养模式,分别以问题链教学、支架式教学以及情境创设教学三种策略融入在高中生物教学中部分教学片段中,阐述教师在高中生物教学中培养学生成长型思维的具体路径。The difficulty and depth of biology courses in high school lead to students’ fear of difficulties and lack of motivation in the learning process. Cultivating students’ growth thinking has a great driving force for the achievement of students’ core quality of biology and personal development. This paper adopts effective teaching strategies to cultivate students’ growth thinking in biology teaching. According to the thinking training mode of starting, developing, advancing and forming, three strategies of problem chain teaching, scaffolding teaching and situational creation teaching are integrated into some teaching fragments of high school biology teaching. This paper expounds the concrete path for teachers to cultivate students’ growth thinking in senior biology teaching.展开更多
Objective:To investigate the morphological changes of the neuronal neurites in diabetic rabbit brain. Methods: Twenty- four New Zealand White rabbits were divided into 2 groups: control group and type Ⅱ diabetic grou...Objective:To investigate the morphological changes of the neuronal neurites in diabetic rabbit brain. Methods: Twenty- four New Zealand White rabbits were divided into 2 groups: control group and type Ⅱ diabetic group induced by high - carbohydrate and high- fat diet. The levels of blood sugar and insulin were detected at week 0(w0), w4, w8, w13, w18, w23 and w28. Brain tissue was stained by Nissl staining and immunolistochemistry with a specific antibody to neurofilament proteins. Result: In diabetic rabbits, the amount of large pyramidal neuron was significantly reduced, and neuronal neurites became swollen, whorled, disrupted and changed in caliber. In hippocampus CA1 region neurofilament staining was very weak. Conclusion: Neurotoxicity of chronic hyperglycemia might be relevant to vascular chronic complications, which affected the expression of NF and led to neurophysiological and structural changes in the brain of rabbits with type Ⅱ diabetes.展开更多
文摘高中阶段生物学课程在难度和深度上的提升导致学生在学习过程中会出现畏惧难点、动机不足等问题,培养学生成长型思维对于学生生物核心素养的达成以及个人发展有很大的推动力。本文以在生物教学中采用有效的教学策略培养学生的成长型思维,按照思维起步、发展、进阶、形成的思维培养模式,分别以问题链教学、支架式教学以及情境创设教学三种策略融入在高中生物教学中部分教学片段中,阐述教师在高中生物教学中培养学生成长型思维的具体路径。The difficulty and depth of biology courses in high school lead to students’ fear of difficulties and lack of motivation in the learning process. Cultivating students’ growth thinking has a great driving force for the achievement of students’ core quality of biology and personal development. This paper adopts effective teaching strategies to cultivate students’ growth thinking in biology teaching. According to the thinking training mode of starting, developing, advancing and forming, three strategies of problem chain teaching, scaffolding teaching and situational creation teaching are integrated into some teaching fragments of high school biology teaching. This paper expounds the concrete path for teachers to cultivate students’ growth thinking in senior biology teaching.
基金These authors contribute equally to this work.Supported by the Hunan science fourndation(JJY2069)
文摘Objective:To investigate the morphological changes of the neuronal neurites in diabetic rabbit brain. Methods: Twenty- four New Zealand White rabbits were divided into 2 groups: control group and type Ⅱ diabetic group induced by high - carbohydrate and high- fat diet. The levels of blood sugar and insulin were detected at week 0(w0), w4, w8, w13, w18, w23 and w28. Brain tissue was stained by Nissl staining and immunolistochemistry with a specific antibody to neurofilament proteins. Result: In diabetic rabbits, the amount of large pyramidal neuron was significantly reduced, and neuronal neurites became swollen, whorled, disrupted and changed in caliber. In hippocampus CA1 region neurofilament staining was very weak. Conclusion: Neurotoxicity of chronic hyperglycemia might be relevant to vascular chronic complications, which affected the expression of NF and led to neurophysiological and structural changes in the brain of rabbits with type Ⅱ diabetes.
