Sweet Potato Experiment
description
Transcript of Sweet Potato Experiment
SWEET POTATO EXPERIMENT
Life Science
Carl E. Lewis. “Sweet Potato” November 28, 2007 via flickr. Creative Commons.
Objective
To learn about and understand life sciences and growth processes.
The class will be broken into groups of 3.
Each group will receive a potato. Each group member will be assigned
a job Recorder Measurer Feeder
There will be one control potato for the class that will be fed with tap water.
Each group will pick a different source of food for their groups. Ex: pop, coffee, salt water
The Groups will receive a potato, 4 toothpicks, and a jar.
With the pointy side of the potato down, push the 4 toothpicks in crossway 2/3 the way up the potato.
Place the potato in the jar with the toothpicks resting on the jars rim.
Fill the glass almost all the way to the top with a mix of ½ water, and ½ of your variable substance.
Write your variable name on a piece of tape and stick it to your jar.
Place jar on the window ledge.
Romulusnr. “Mason jar” November 27, 2006 via flickr, Creative Commons
On Monday, Wednesday, and Friday progress of both the control potato and group will be recorded.
The stems, leaves and roots that grow should be measured, counted, and recorded on a provided chart and labeled by date.
Date # and Length of
Leaves
# and Length of
Stems
# and Length of
Roots10/1/09 0, 0 cm 0, 0 cm 0, 0 cm
10/3/09 0, 0cm 1, 0.5 cm 2, 0.5 cm1 cm
After measurements are taken the person whose job is to feed the plant will carefully fill the jar with water to replace the water that was absorbed by the potato.
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After 4 weeks of progress the final recordings will take place.
# of roots, stems, and leaves should be counted, measured, and recorded for the last time.
Date # and Length of
Leaves
# and Length of
Stems
# and Length of
Roots
After all the data is gathered, the group will create 3 charts ( 2 bar, 1 line) to show the potatoes progress.
Se-ries1
0
1
2
3
4
5
ControlVariable
Series1
012345
ControlVariable
The 1st chart must include the date of observation, and length of roots that grew.
The 2nd chart will show the progress of stem lengths.
Both charts should include data points from the control as well as the group potato.
The 3rd chart will be a line graph It will have 4 separate lines (different
colors). One will represent the progress of the control potato and the other will be the results of the group potato.
The lines will represent the progress of the stems and the roots.
Oct. 1
Oct. 3
Oct. 5
02468
Control StemsStemsControl RootsRoots
Date
Leng
th (
cm)
Once the charts are complete each group will turn in a short write up
Included will be: Alternate food source. Final # of stems, leaves, and roots. A comparison of your results to the
control results Conclusion of why you think your plant
did or did not grow better.