Ch 27: Planning & Conducting Scientific Investigations

About This Chapter

This chapter covers topics regarding planning and conducting scientific investigation, such as the scientific method, experimental design, metric system and the analysis and communication of scientific findings.

Planning & Conducting Scientific Investigations - Chapter Summary

Our professional instructors assembled the lessons and assessments of this chapter to provide you with a review of the steps used to plan, conduct and analyze scientific investigations. After these lessons you should have a better understanding of:

  • The steps of the scientific method and experimental designs
  • Independent variables, dependent variables and hypothesis testing
  • Units and unit conversions of the metric system
  • Electronic and print sources of scientific research
  • Determining the accuracy, reliability and validity of scientific research
  • Constructing and reading scientific graphs and charts
  • Analyzing data from randomized experiments
  • Keeping records and reporting findings from scientific investigations

To test your understanding of these topics, complete the short assessments that accompany the lessons. These lesson quizzes will help you discover topics from the lessons you may not understand. Improve your understanding of these topics by using the links presented in the quiz results to review specific topics, or reading over the lessons' transcripts.

12 Lessons in Chapter 27: Planning & Conducting Scientific Investigations
Test your knowledge with a 30-question chapter practice test
What is the Scientific Method? - Steps and Process

1. What is the Scientific Method? - Steps and Process

The scientific method is an organized, systematic way researchers, including psychologists, perform research. Psychologists use it to observe, describe and explain human behavior. The scientific method includes a step-by-step formula for researchers to follow.

Experimental Design in Science: Definition & Method

2. Experimental Design in Science: Definition & Method

What are the requirements of a scientific experiment? How do scientists turn hypotheses into theories and laws? Learn the answers to these questions and more in this lesson on the design of scientific experiments.

Designing an Experiment to Test a Given Hypothesis

3. Designing an Experiment to Test a Given Hypothesis

A well-written hypothesis is the key to any well-designed experiment. In this lesson, we'll work through the process of designing an experiment based on the hypothesis it's meant to test and see how the two work to complement each other.

Identifying & Interpreting Independent & Dependent Variables

4. Identifying & Interpreting Independent & Dependent Variables

Scientists answer questions by performing experiments that have an independent variable, a dependent variable and at least one control variable. By controlling, adjusting and measuring these variables, scientists find answers to their questions.

The Metric System: Units and Conversion

5. 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.

Using Appropriate Tools for Scientific Tests & Data Collection

6. Using Appropriate Tools for Scientific Tests & Data Collection

A properly run experiment depends on using the right tools, both for data collection and analysis. In the end, it will save you time, money and frustration to spend some time planning out which tools are most appropriate for your work.

Print & Electronic Sources for Scientific Research

7. Print & Electronic Sources for Scientific Research

Sources provide you with helpful background information that support your own work. You can find sources both online and in printed materials. There are benefits and drawbacks to each, so you'll need to consider which is best for you and your project.

Scientific Sources: Accuracy, Reliability & Validity

8. Scientific Sources: Accuracy, Reliability & Validity

It's important to use other sources to support your work, but what's even more important is to use the right ones. Sources should be valid, reliable, and accurate, but it's not always easy to tell which ones meet these criteria.

How to Read Scientific Graphs & Charts

9. How to Read Scientific Graphs & Charts

How do scientists summarize their findings with visual aids? In this lesson, explore the different types of tables, charts and graphs that scientists use. Learn to read these effectively as a preview to your science studies.

How to Construct Graphs from Data & Interpret Them

10. How to Construct Graphs from Data & Interpret Them

After watching this video, you should be able to explain what a graph is, construct a scatter plot, and interpret scatter plots from scientific data. A short quiz will follow.

Analyzing & Interpreting the Results of Randomized Experiments

11. Analyzing & Interpreting the Results of Randomized Experiments

Analyzing and interpreting the results of an experiment can be a confusing process, and it's easy to make mistakes. This lesson will help you understand the important factors of experiment analysis.

Scientific Investigations: Keeping Records & Communicating Results

12. Scientific Investigations: Keeping Records & Communicating Results

Science is all about doing investigations. Learn the importance of a scientist keeping good records, and the ways the scientist communicate the results from those records.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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