DAY 2 Examining Seeds Virtual Lab Seed Experiment

DAY 2: Examining Seeds Virtual Lab Seed Experiment AND Setting up the Research Biology Notebook (a tutorial for you!)

Virtual Seed Lab – Day 2 Objective: Students will: Know the parts of the seed; Understand requirements for seeds to germinate and grow; Be able to explain and analyze the growth patterns of seedlings. Recognize differences between plants in their germination and growth requirements

Virtual Seed Lab – Part 2 In Part 1 you examined seeds and discovered what seeds need to germinate and grow. We will use this information to examine the following research question: How do seedlings develop over time? Think about how we can obtain evidence to answer this question. (Hint: scientific evidence is obtained by observations and measurements to prove a hypothesis or theory) How can we obtain observations and measurements to help answer the research questions? We can perform and experiment!

Virtual Seed Lab Remember that the scientific method is an ongoing process http: //undsci. berkeley. edu/article/scienceflowchart

Virtual seed lab Parts of an Experiment – to be determined in every experiment

Virtual Seed lab: How do seedling develop over time? What is the IV for the Virtual Seed Lab? time What is the DV? Measurement of root and shoot length

Research Lab Notebook - lets get started: Page 1: Title Page 2 and 3: Table of Contents Page 4 leave blank (just in case) Page 5 and 10: Label with: Page number Title of Lab/experiment OR Research Question? Did you remember to add the date, title and page number to your Table of Contents?

Set up your Title Page: (right side) (left side) (leave blank) Example: Research Biology 2016 -2017 Jane/john Doe Riverside High School, Leesburg, VA 20176. 1.

Does your table of contents look like this? (right side) (left side) Table of Contents (Leave blank) Date 9/9/16 Title Page Number Virtual Seed Lab . Set up 2 page (2 and 3) for the title pages) 2.

Does your table of contents look like this? (right side) (left side) Table of Contents (Leave blank) Date Title Page Number . Set up 2 page (2 and 3) for the title pages) 3.

Does your table of contents look like this? (right side) (left side) (leave blank) (Leave blank) . 4.

Lets add our Model to the (left side) Date (right side) VIRTUAL LAB SEED EXPERIMENT Research Question : Research Model : water Germinating Seeds light CO 2 5.

Virtual Lab Seed Experiment In your notebook label page 6 as Student Understandings (see next slide): Write down 4 observations after examining the seeds (pictures on next slide) Draw a germinating seed and label the parts Write down two questions of your own about the experiment?

Add more pages to this experiment: (left side) Date (right side) VIRTUAL LAB SEED EXPERIMENT STUDENT UNDERSTANDINGS: Write 1 -2 sentences about why you think the lab is important to our understanding of science. References: Https//askabiologist. asu. edu/experiments/ vpocketseeds : 6.

Germinating seed (Shoot) (root)

Lets get going with the content: (left side) Date (right side) VIRTUAL LAB SEED EXPERIMENTAL DESIGN: Research Question: Hypothesis: Null (Ho) Hypothesis Alternative (Ha) hypothesis we will add later Independent Variable: Experimental Groups Dependent Variable: Control: Constant: we will add later 7.

Virtual Lab Seed Experiment Part 2: Examine the contents of the germinated seed packets and think about the materials needed for this experimental set-up In your notebook (see next slide), make a section titles MATERIALS and METHODS/PROCEDURES MATERIALS SHOULD BE BULLETED METHODS/PROCEDURES SHOULD BE NUMBERED

Lets get going with the content: (left side) Date (right side) VIRTUAL LAB SEED EXPERIMENT MATERIALS: (listed with bullets) METHODS/PROCEDURES: (numbered steps) . 8.

Example of the Set up for the lab.

List of Materials from virtual lab: Seed packets (this experiment uses Peas, Little Marvel) Re-sealable plastic bags (sandwich or quart size) Paper towels or napkins Water. Tape Cardboard (optional) Paper clips (optional) Binder clips (optional) Scissors

Procedures from virtual lab: 1. 2. 3. 4. 5. Day 1, soak the seeds (this experiment uses Peas, Little Marvel) overnight in water. Day 2, Place a wet paper towel in a ziplock bag and place 5 -10 seeds on the paper towel in the bag. Blow air into the bag and seal. On Day 1 -10, observe the growth of the seeds. Measure (in cm) the root & shoot lengths.

Virtual Lab Seed Experiment Part 2 (all right side): Go Back to Page 7 In your notebook under Experimental down the : Design write Research Question (put under title) The control – Seeds Soaked overnight (10 hrs light and 14 hrs Dark at 23 o. C IV- (what are you manipulating and/or comparing to the control? ) write down the IV that you chose: Soaked and rotated Not soaked Soaked and no light DV – measurement of root and shoot growth (cm) = the responding variable

Virtual Lab Seed Experiment Paste the tables that you have been given in your lab notebook on Page 9 to record your data

Part 3 – your experiment Go to Dr. Biology’s data site https: //askabiologist. asu. edu/experiments/pocketseed_ compare Compare seeds for days 1 -10 for your environmental condition and fill in the data on the blank data sheet for Table 2 given to you by your teacher. Compare the data for your environmental condition to the control data by analyzing the graph for shoot and root length(previously completed in Part 2.

Now lets set up the experiment pages? (left side) (right side) VIRTUAL LAB SEED EXPERIMENT DATE (leave blank) Data Tables: (be sure to include a Title for the table) 9.

Analyzing the data: The best way to see the results of an experiment is to make a graph. There is a graph at the bottom of the page that can be used to analyze the data on the excel spreadsheet. Copy the graphs for the Root and Shoot length for the CONTROL and your VARIABLE in your notebook. (you should have 4 graphs – 2 for the control data and 2 for the selected variable) Why did the experiment use a line graph to analyze and visualize the data?

Now lets set up the experiment pages? (left side) (right side) VIRTUAL LAB SEED EXPERIMENT DATE (leave blank) Graphs: Be sure to include the following for your Graph: 1. Title (The Effect of the IV on the DV) 2. Dependent variable on Y axis 3. Independent variable on X axis 4. Axis labeled 5. Scales drawn on axis 6. Key included 7. Drawn neatly (with a ruler – no free Hand drawing of your graph) 10.

Results section – DATA (left side) (right side) VIRTUAL LAB SEED EXPERIMENT DATE (leave blank) Results: Be sure to include the following for your Results: 1. 2. 3. 4. 5. 6. 7. Topic sentence (what is the lab about) Identify the IV and the DV State if the data is quantitative or qualitative Include the means (AVG) for each group What results were discovered? State the null hypothesis. Was the null hypothesis accepted or rejected? 11.

Analysis of Data Making Conclusions from the Data for the Control seeds and the experimental seeds on days 1 -10: Look at the graph that was created on the excel spreadsheet. Do you notice any trends in the data? Which days do the seeds start to grow a root, or a shoot? Do roots and shoots grow at the same rate? Does the data help us to answer our research questions: How do seedlings develop over time?

Results section – DATA (left side) (right side) VIRTUAL LAB SEED EXPERIMENT DATE (leave blank) Conclusion: Be sure to include the following for your Conclusion: 1. Topic sentence (what is the lab about) 2. What results were discovered? 3. State the null hypothesis. 4. Was the null hypothesis accepted or rejected? 5. What is the final conclusion – make sure to state the conclusion and add a plausible Explanation (this is the WHY) 6. Were there any sources of error? 7. What is the next step in this research or Project? 11.

All Done!!! *** be sure to go back and fill in the information on your Table of Contents!!!