一个全国性的介绍化学教师和他们的教学实践的快照
Ying Wang1, Naneh Apkarian2, Melissa H Dancy3
1Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904-4319, United States.
Journal of chemical education
|April 15, 2024
概括
积极学习是有效的,但其在STEM教育中的采用速度很慢. 一项全国性调查显示,化学入门教师知道积极学习策略,但很少实施它们,往往更喜欢传统的讲座.
科学领域:
- 化学教育研究 化学教育研究
- 在STEM教学方面,
背景情况:
- 积极学习策略显然可以改善学生的成绩和在高等教育中的坚持.
- 尽管已证明有好处,但在包括化学在内的科学,技术,工程和数学 (STEM) 领域采用积极学习的速度显著缓慢.
- 现有的研究往往侧重于化学教育社区内的特定策略,在全国范围内了解一般采用率和教师特征方面存在差距.
研究的目的:
- 在美国各地的化学入门教师中调查积极学习策略的当前知识和实施水平.
- 根据教师人口统计,教学培训,教学经验和机构特征 (类型和任职状况) 来识别积极学习采用的变化.
- 建立对导师个人资料和入门化学教学实践的基本理解,以告知未来的干预.
主要方法:
- 进行了一项全国性的化学入门教师调查.
- 收集关于教师对主动学习的知识,实施频率,教学培训,教学经验和责任的数据.
- 分析了调查答案,以确定不同类型的机构和所有权状况的趋势和变化.
主要成果:
- 大多数教师拥有积极学习策略的知识,但一致的实施是有限的,讲座仍然是主要的教学方法.
- 化学入门教师主要是男性和欧洲血统的,他们往往以最小的教学培训进入他们的角色,并获得有限的专业发展.
- 在教学培训,积极学习的使用,以及基于机构类型和教师任职地位的讲授时间方面存在显著差异.
结论:
- 虽然教师意识到主动学习,但它在入门化学中的广泛,一致的实施受到阻碍.
- 化学教师需要加强教学培训和专业发展机会.
- 改善沟通和有针对性的干预措施是必要的,以促进在不同机构环境和教师职业生涯阶段更广泛地采用积极学习策略.
更多相关视频
10:17Improving Student Outcomes with an Adaptable Molecular Cloning Course-Based Undergraduate Research Experience
Published on: November 15, 2024
1.0K
07:32Use of Galvanic Skin Responses, Salivary Biomarkers, and Self-reports to Assess Undergraduate Student Performance During a Laboratory Exam Activity
Published on: February 10, 2016
9.4K
相关概念视频
02:20The Small x Assumption
46.1K
If a reaction has a small equilibrium constant, the equilibrium position favors the reactants. In such reactions, a negligible change in concentration may occur if the initial concentrations of reactants are high and the Kc value is small. In such circumstances, the equilibrium concentration is approximately equal to its initial concentration. This estimation can be used to simplify the equilibrium calculations by assuming that some equilibrium concentrations are equal to the initial...
46.1K
02:13Energy Diagrams, Transition States, and Intermediates
16.4K
Free-energy diagrams, or reaction coordinate diagrams, are graphs showing the energy changes that occur during a chemical reaction. The reaction coordinate represented on the horizontal axis shows how far the reaction has progressed structurally. Positions along the x-axis close to the reactants have structures resembling the reactants, while positions close to the products resemble the products. Peaks on the energy diagram represent stable structures with measurable lifetimes, while...
16.4K
01:16Flame Photometry: Lab
244
In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...
244
02:58Chemistry of the Cell
6.9K
6.9K
01:09Comparing Experimental Results: Student's t-Test
1.6K
The t-test is a statistical method used to compare the sample mean with a population mean or compare two means from two data sets. The test statistic is calculated from the standard deviation, mean, and number of measurements in the data set at a selected confidence interval and then compared to a table of critical values at this confidence level. If the test statistic is smaller than the critical value, the null hypothesis is accepted. In this case, we state that the difference between the...
1.6K
02:21Chemical and Solubility Equilibria
4.1K
The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ΔGsolution is expressed as the balance of ΔGinteraction against the always-favorable free-energy of mixing, ΔGmixing. Solution formation is favorable if ΔGsolution is less than zero, whereas it is unfavorable if ΔGsolution is greater than zero. In short, for a solution to form and complete dissolution to take place,...
4.1K