Dr. Biodiversity Eye Test

What did you see?

Scientific Method Method of problem solving Observations  Questions  Hypotheses OR Questions  Observations  Hypotheses OR Questions  Hypotheses  Observations

Basic Steps to the Scientific Method 1. Make Observation or State a Problem/Question 2. Formulate a Hypothesis- testable explanation for an observation predict what will occur and why 3. Testing the hypothesis - only further observations required - experimentation is required

Controlled Experiment Isolates and tests the effects of a single factor or experimental variable Two identical groups: 1. Control group 2. Experimental group Has the scientific method changed over time?

PRE-LAB: Interpreting a Controlled Experiment What is a seed? What do seeds need to germinate? Which factor is being investigated in this lab? Are there any other variables involved in the lab that could affect the outcome?

What kind of data is going to be collected from the Mustard Seed Lab? Quantitative Data Descriptive Data How can quantitative data be illustrated?

4. Recording and Analyzing Data Display data in: a. data table b. line graph c. bar graph d. pie chart

Line Graph Shows relationship between two variables Allows you to estimate values X-axis: independent variable Y-axis: dependent variable

Bar Graph Used to show comparisons X-axis either: 1. Scale 2. Labels

Pie Chart Topic represented by entire “pie” “slices” individual categories

Data Tables Displays data Title- should reflect information in table SetupDish IDish II Control021 Experimental244 Number of seeds that germinated

General Graphing Procedures ALWAYS PENCIL Title and Key, if needed Correct scale Equal spacing between units Neat

Forming A Conclusion Either accept or refute hypothesis Inconclusive results Rise of new hypotheses Reproducibility- verification Theory- tested and reconfirmed countless times; unlikely to be disproved