规范分级是教生物化学的有效方法
Justin J Donato1, Thomas C Marsh1
1Chemistry Department, University of St. Thomas, St. Paul, Minnesota, USA.
Journal of microbiology & biology education
|August 24, 2023
概括
规范分级,一种替代的评估方法,在高级生物化学课程中有效地提高了学生的学习和热情. 这种方法,专注于通过频繁,低风险评估的掌握,导致了有利的学生态度和强的表现.
科学领域:
- 生物化学教育教育 生物化学教育
- 教育评估的教育评估
- 教学创新的教育创新.
背景情况:
- 传统的以考试为基础的评估可以诱导考试焦虑,可能不会优化知识保留.
- 规范分级提供了一个替代方案,通过频繁的低风险评估,专注于通过频繁的低风险评估来证明特定技能的掌握.
- 本研究探讨了在高等教育科学环境中实施规范分级的方法.
研究的目的:
- 评估在高级生物化学课程中的规范分级的有效性.
- 评估学生对规范评分的态度和看法.
- 根据这个评估模型,将学生的表现与他们对学习的看法联系起来.
主要方法:
- 实施了规范分级,包括12个简短的测试题,实验室练习和一个累积的最终考试.
- 学生的态度被测量使用调查管理在学期的三个点.
- 学生在测试中的表现与最终考试中的表现进行了比较.
主要成果:
- 学生调查显示,对规范分级方法的整体好评.
- 绩效分析表明,学生有效地学习和保留课程材料.
- 在学生对学习的看法和他们在规范分级工具上的表现之间观察到强烈的相关性.
结论:
- 规范分级是评估学生生物化学学习的有效策略.
- 这种评估方法可以增强学生对上级科学课程的热情和参与度.
- 规范评分对学生的表现和他们对学习的感知都有积极的影响.
相关概念视频
01:19Introduction to Enzyme Kinetics
20.2K
Enzyme kinetics studies the rates of biochemical reactions. Scientists monitor the reaction rates for a particular enzymatic reaction at various substrate concentrations. Additional trials with inhibitors or other molecules that affect the reaction rate may also be performed.
The experimenter can then plot the initial reaction rate or velocity (Vo) of a given trial against the substrate concentration ([S]) to obtain a graph of the reaction properties. For many enzymatic reactions involving a...
The experimenter can then plot the initial reaction rate or velocity (Vo) of a given trial against the substrate concentration ([S]) to obtain a graph of the reaction properties. For many enzymatic reactions involving a...
20.2K
02:35Acid and Bases: Ka, pKa, and Relative Strengths
26.8K
This lesson delves into a critical aspect of the relative strengths of acids and bases. The strength of an acid is evaluated by the acid dissociation into its conjugate base and a hydronium ion in water. The complete dissociation of a strong acid is confirmed with a very high concentration of hydronium ions. As a result, an incomplete dissociation process affirms a weak acid. Therefore, the equilibrium is in the forward direction for strong acids and backward for weak acids in these reactions.
26.8K
01:07Catalytically Perfect Enzymes
4.0K
The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
Most enzymes...
Most enzymes...
4.0K
02:11Leveling Effect and Non-Aqueous Acid-Base Solutions
8.2K
This lesson defines the leveling effect in acidic and basic solutions and its role in aqueous and non-aqueous solutions. It is essential to understand the competing nature of various species in a chemical system.
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
8.2K
01:25Protein Folding
8.1K
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
8.1K
01:13Introduction to Mechanisms of Enzyme Catalysis
8.3K
For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
8.3K