小学英语课内外融合阅读教学是一种以学生为主体的多层次、多维度的融合式阅读教学新模式,着力提升学生的英语阅读能力和文化意识,使学生建立良好的阅读习惯,有利于学生全面发展。《义务教育英语课程标准(2022年版)》把思维品质列入英...小学英语课内外融合阅读教学是一种以学生为主体的多层次、多维度的融合式阅读教学新模式,着力提升学生的英语阅读能力和文化意识,使学生建立良好的阅读习惯,有利于学生全面发展。《义务教育英语课程标准(2022年版)》把思维品质列入英语学科核心素养,提升思维品质有利于增强学生的语言能力、提高自主学习的效率及形成跨文化意识。以译林版小学英语四年级上册Unit 5 Our new home为例,结合一线教学实践探索在小学英语课内外融合阅读教学中构建思维发展型课堂的策略,如藏头诗导入课堂、激活思维,主线贯穿课堂、构建思维,课外绘本融合课堂、拓展思维等。展开更多
Studies on soil wind erosion began with single factors affecting soil wind erosion; with increasing quantities of data being accumulated,the wind erosion equation(WEQ),the revised wind erosion equation(RWEQ),the wind ...Studies on soil wind erosion began with single factors affecting soil wind erosion; with increasing quantities of data being accumulated,the wind erosion equation(WEQ),the revised wind erosion equation(RWEQ),the wind erosion prediction system(WEPS),and other soil wind erosion models have been successively established,and great advances have been achieved.Here we briefly review the soil wind erosion research course and analyze the advantages and disadvantages of the current soil wind erosion models.From the perspective of the dynamics of wind erosion,we classified the factors affecting soil wind erosion into three categories,namely,wind erosivity factors(WEF),soil antierodibility factors(SAF),and roughness interference factors(RIF).We proposed the concept of a standard plot of soil wind erosion to solve the problem of uncertainty of the soil wind erosion modulus on a spatial scale,and provided methods to set similarity conditions in wind tunnel simulation experiments and to convert the spatial scale of the wind erosion modulus from the standard plot to a large scale field.We also proposed a conceptual model on the basis of the dynamics of soil wind erosion with the theoretical basis that wind produces a shear force on the soil surface.This shear force is partitioned by barely erodible soil surfaces and roughness elements on the ground,and the amount of soil loss by wind should be calculated by comparing the shear force of the wind on barely erodible soil surfaces with the anti-erosion force of the surface soil.One advantage of this conceptual model is that the calculated soil wind erosion modulus is not subject to changes of spatial scale.Finally,we recommended continual improvement of the existing models while also establishing new models.展开更多
文摘小学英语课内外融合阅读教学是一种以学生为主体的多层次、多维度的融合式阅读教学新模式,着力提升学生的英语阅读能力和文化意识,使学生建立良好的阅读习惯,有利于学生全面发展。《义务教育英语课程标准(2022年版)》把思维品质列入英语学科核心素养,提升思维品质有利于增强学生的语言能力、提高自主学习的效率及形成跨文化意识。以译林版小学英语四年级上册Unit 5 Our new home为例,结合一线教学实践探索在小学英语课内外融合阅读教学中构建思维发展型课堂的策略,如藏头诗导入课堂、激活思维,主线贯穿课堂、构建思维,课外绘本融合课堂、拓展思维等。
基金supported by the National Natural Science Foundation of China(Grant No.41330746)
文摘Studies on soil wind erosion began with single factors affecting soil wind erosion; with increasing quantities of data being accumulated,the wind erosion equation(WEQ),the revised wind erosion equation(RWEQ),the wind erosion prediction system(WEPS),and other soil wind erosion models have been successively established,and great advances have been achieved.Here we briefly review the soil wind erosion research course and analyze the advantages and disadvantages of the current soil wind erosion models.From the perspective of the dynamics of wind erosion,we classified the factors affecting soil wind erosion into three categories,namely,wind erosivity factors(WEF),soil antierodibility factors(SAF),and roughness interference factors(RIF).We proposed the concept of a standard plot of soil wind erosion to solve the problem of uncertainty of the soil wind erosion modulus on a spatial scale,and provided methods to set similarity conditions in wind tunnel simulation experiments and to convert the spatial scale of the wind erosion modulus from the standard plot to a large scale field.We also proposed a conceptual model on the basis of the dynamics of soil wind erosion with the theoretical basis that wind produces a shear force on the soil surface.This shear force is partitioned by barely erodible soil surfaces and roughness elements on the ground,and the amount of soil loss by wind should be calculated by comparing the shear force of the wind on barely erodible soil surfaces with the anti-erosion force of the surface soil.One advantage of this conceptual model is that the calculated soil wind erosion modulus is not subject to changes of spatial scale.Finally,we recommended continual improvement of the existing models while also establishing new models.
