Experimental Design
OUT OF THE 100 BEAN SEEDS
I PLANTED IN MY GARDEN,
ONLY 35 GERMINATED INTO
HEALTHY PLANTS? HOW CAN
I INCREASE THE PERCENT OF
BEAN SEEDS THAT GERMINATE?
Seed Germination
Variables in Seed Germination
Temperature of Soil
Amount of Time
Amount of Light
Amount of Water
Type of Seed
_?_ variables
Percent of seeds that germinate
_?_ variable
THE HYPOTHESIS
• CHANGE ONLY ONE INDEPENDENT
VARIABLE,
• WHICH SHALL IT BE? oC, H2O, Light, Time
IF ___(independent variable)_____ IS __(describe change)___
IF THE
IS INCREASED
THEN __(dependent variable)___ will __(describe change)__
THEN THE
WILL INCREASE
THE EXPERIMENT
IV: Amount of Water
Levels of the IV (Drops per hour)
Number of Trials
DV: Percent of Seed Germination
Constants:
1.
2.
3.
4.
Click here for directions for setting up an
SIMULATION
account with Gizmos
Variables
SET SEED TYPE TO ‘B’
SET LIGHT TO 50
SET TEMPERATURE TO 25oC
SET WATER TO 25 DROPS/HOUR
RUN FOR 5 DAYS
CLICK ON GRAPH TAB
RECORD RESULTS ON DATA TABLE
CHANGE WATER TO 50 (75, 100)
REPEAT.
DATA TABLE
Drops per
Hour
Percent of Seed Germination
Your
results
25
50
75
100
Neighbor
Neighbor
Neighbor
Average
Class
Average
Graphing the Data
(Insert the data, create a Bar Graph
and Label the graph)
Input the data into Logger Pro
_?_ axis
– Amount of Water
– Class Average of
_?_ axis
Percent of Germination
Tutorial on using Logger Pro
COMPLETED GRAPH
CONCLUSIONS
1. What was the purpose of the experiment?
2. What were the major findings?
3. Was the hypothesis supported by the data?
4. What possible explanations can you offer for the findings?
5. What recommendations do you have for further study
and for improving the experiment?
EVALUATION
PRINT OUT YOUR COMPLETED LAB REPORT AND
HAND IT IN TO THE INSTRUCTOR
COMPLETE THE ASSESSMENT QUESTIONS
FOUND BELOW THE SIMULATION
AND THEN CHECK YOUR ANSWERS
Growing Runner Beans
This presentation will show how
two runner beans grow.
Day 1
14.00
Day 1
20.00
Day 2
10.00
Day 2
19.00
Day 3
08.00
Day 4
08.00
Day 5
08.00
Day 5
18.00
Day 6
08.00
Day 6
21.00
Day 7
08.00
Day 7
17.00
Day 8
10.00
Day 8
12.00
Day 9
08.00
Day 9
12.00
Day 9
19.00
Day 10
08.00
Day 10
13.00
Day 13
15.00
Day 11
08.00
Day 11
19.00
Return to first slide
Setting up a Gizmo Account
Launch Internet explorer
Type:
www.explorelearning.com
Step one
Click here
Step Two
Click here
Step Three
Type in class code
Step Four
Click Here
Step Five
Confirm your Class
Then Click Here
Step Six
Fill in areas with red stars
Then submit
Step Seven
Notice your name
Click Here
Step Eight
Set Variables
Run Experiment
Step Nine
Then click
Record Results
Step Ten
Paste into document
Click to copy
To clipboard
Type Information
Go back to Gizmo
Select Graph and copy
Select Blank Document
To clipboard
Then Paste in Graph
Type
Go back to Gizmo
Reset variable
Repeat capture and paste
Go Back
Go Back