About This Chapter
Praxis General Science: Methodology, Techniques and History - Chapter Summary
In this chapter, we'll help you review the scientific method, qualitative and quantitative research, and a host of other essential topics related to scientific methodology, history and techniques as you prepare for the Praxis General Science exam. These lessons ensure you'll be able to do the following:
- Explain the nature of science, the scientific method and how to process and apply scientific knowledge
- Interpret scientific data, tables, graphs and charts
- Assess the quality research studies and evaluate data accuracy and error
- Identify important events, contributions and theories in science history
- Discuss laboratory equipment and safety
- Utilize common laboratory measurements, the units of the metric system and scientific notation
- Examine unifying themes of science and how to apply scientific knowledge
- Explain hypothesis, theory and law in science
Our professional instructors teach you what you need to know about methodology, science history and the essentials behind laboratory safety. With our informative, easy-to-navigate video lessons at your arsenal, you'll be able to breeze through those topics on the Praxis General Science exam.
1. The Nature of Science
This lesson will explore the basic nature of science. It will distinguish science from pseudoscience and hypothesis from theory and natural law; it will give plenty of examples of each.
2. Unifying Themes, Principles & Relationships in Science
Learn the true definition of science and explore the main themes and principles to understand how science helps us find relationships in the natural world. Take a quiz to test what you know.
3. Hypothesis, Theory & Law in Science
In this lesson, learn how to define hypothesis, theory, and law in science. Then, discover the ways that these ideas are related to each other and how they help us to explain the universe around us.
4. How to Process & Apply Knowledge in Science
In this lesson you'll be learning about analytical skills that will help you become a better scientist. Here, you'll learn how observing, making comparisons and inferences, generalizing, and applying data can help you reach scientific conclusions.
5. The Scientific Method: Steps, Terms & Examples
The scientific method is more than just hypotheses and experiments. In this lesson, we'll explore the themes and variations that make up the world of science.
6. How to Interpret Tables, Graphs & Charts of Scientific Data: Practice Problems
In this lesson, we will look at some practice problems involving tables, graph, and charts. We will specifically look at x- and y-axis graphs, pie charts, and bar graphs.
7. Validity and Reliability: How to Assess the Quality of a Research Study
Many psychologists and teachers complete research studies. How can you tell if a study was done well? This lesson will cover many criteria for a good quality study, including types of reliability and validity.
8. Evaluating Data: Precision, Accuracy & Error
The data you present as a scientist needs to be as accurate, precise and error-free as possible. In this lesson, we'll discuss what each of these terms means, as well as how error is introduced into measurements and other data collection.
9. The History of Science: Events, Contributions & Theories
In this lesson, we discuss a few significant events in science's history. We will see how science has changed over the years as we start to question what we think we know.
10. Common Laboratory Equipment: Types & Uses
Biologists use all kinds of equipment in their labs to run their experiments. In this lesson, you'll identify some of the most common pieces of equipment as well as when you should or shouldn't use them.
11. Laboratory Safety Techniques: Protecting People and Equipment
Laboratory safety is not fun, but following the rules ensures that lab activities can be enjoyed by everyone. In this lesson, we cover some basic lab safety rules to follow that will help lab time be both safe and fun.
12. Standard Laboratory Safety Equipment
Even with proper precautions, lab accidents do happen. When they do, knowing what safety equipment is in your lab, where it is located, and how to use it can prevent further harm to both the lab and the people working in it.
13. Understanding Laboratory Measurements: Units & Types
There are many different units that can be used for measurements. This may not only lead to incorrect data measurements, but also to confusion about which units are most appropriate. Therefore, a standard set of units is used for each type of measurement in the biology lab.
14. The Metric System: Units and Conversion
Just like you and your friend communicate using the same language, scientists all over the world need to use the same language when reporting the measurements they make. This language is called the metric system. In this lesson we will cover the metric units for length, mass, volume, density and temperature, and also discuss how to convert among them.
15. Significant Figures and Scientific Notation
Are 7.5 grams and 7.50 grams the same? How do scientists represent very large and very small quantities? Find out the answers to these questions in this video.
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Other chapters within the Praxis General Science (5435): Practice & Study Guide course
- Praxis General Science: Matter
- Praxis General Science: Thermodynamics
- Praxis General Science: Periodicity
- Praxis General Science: States of Matter
- Praxis General Science: Bonding & Structure
- Praxis General Science: Chemical Reactions
- Praxis General Science: Acid-Base Chemistry
- Praxis General Science: Solutions & Solubility
- Praxis General Science: Mechanics
- Praxis General Science: Motion & Forces
- Praxis General Science: Magnetism & Electricity
- Praxis General Science: Optics & Waves
- Praxis General Science: Basic Structure & Functions of Cells
- Praxis General Science: Cell Reproduction & Division
- Praxis General Science: Basic Biochemistry of Life
- Praxis General Science: Basic Genetics
- Praxis General Science: Theory & Key Mechanisms of Evolution
- Praxis General Science: Hierarchical Classification Scheme
- Praxis General Science: Plant Structures & Functions
- Praxis General Science: Basic Anatomy & Physiology
- Praxis General Science: Key Aspects of Ecology
- Praxis General Science: Physical Geology
- Praxis General Science: Historical Geology
- Praxis General Science: Earth's Bodies of Water
- Praxis General Science: Meteorology & Climate
- Praxis General Science: Astronomy
- Praxis General Science: Science, Technology & Society
- Praxis General Science Flashcards