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SWEET POTATO EXPERIMENT Life Science Carl E. Lewis. “Sweet Potato” November 28, 2007 via flickr. Creative Commons.

Sweet Potato Experiment

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Life Science. Sweet Potato Experiment. 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. - PowerPoint PPT Presentation

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Page 1: Sweet Potato Experiment

SWEET POTATO EXPERIMENT

Life Science

Carl E. Lewis. “Sweet Potato” November 28, 2007 via flickr. Creative Commons.

Page 2: Sweet Potato Experiment

Objective

To learn about and understand life sciences and growth processes.

Page 3: Sweet Potato Experiment

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

Page 4: Sweet Potato Experiment

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

Page 5: Sweet Potato Experiment

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.

Page 6: Sweet Potato Experiment

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

Page 7: Sweet Potato Experiment

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

Page 8: Sweet Potato Experiment

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.

1.

2.

Page 9: Sweet Potato Experiment

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

Page 10: Sweet Potato Experiment

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

Page 11: Sweet Potato Experiment

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.

Page 12: Sweet Potato Experiment

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)

Page 13: Sweet Potato Experiment

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.