Project-Learning

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Project-Learning

• Under which situation do we use which brand of
  plaster?? 

2
Member list

• Teacher Adviser Tam Wing Ching
• Leader Chong Maan Yu (4)
• Member Chang Lok Yu (2)Chow Suk Shan (5)Ho
  Chung Yan (7)Hui Po Yan (8)Leung Chui Shan (11)

3
Introduction

• Usage of plasters
• related to our daily life.
• allow the wound to breathe and help the natural
  healing process.

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Factors to be considered when doing the
experiments

• Absorbency
• Ventilation
• Force degree
• Waterproof
• Viscosity

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Waterproof Experiment

• Aim
• test the cotton if it could prevent the incoming
  water.

1.Formed the two groups
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(No Transcript)
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Waterproof Experiment
Results
Put on tomato, then filled up with water.
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Waterproof Experiment
1?Standard (obtained the least water ) 4 Watsons 2?Adhesive Plasters 5?Handsaplast 3?Banitore 6?Band Plus (obtain the most water )
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Viscosity Experiment

• Aim
• test which plaster could absorb the largest
  amount of dust

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Viscosity Experiment

put the plasters on some wooden stickers and
placed them near the windows.
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Viscosity Experiment( failed )

• First experiment
• our classroom was so clean, we couldn't found a
  lot of dust

• Second experiment
• there was too a lot of dust, we couldn't find
  different between the plasters

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Absorbency Experiment

• Steps
• drop drib of gentian violet solution to the each
  plasters absorbent cotton.
• Wait for 2 minutes
• put one paper cover the plasters and one paper at
  the bottom to absorb the extra solution.

• Aim
• test the cottons absorbency.
• Why?
• one of the important features
• Gentian violet solution is easy to show the
  results clearly.

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Absorbency Experiment
plaster Cover paper
contains solution cannot absorb the solution completely
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Absorbency Experiment
cover paper (at the bottom) Plaster
has solution can absorb all of the solution but it overloads.

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Absorbency Experiment

• Results
• 1 Adhesive Plasters.
• 2 Banitore Protective
• Plaster
• 3 Hansaplast
• 4 Standard Bandage
• 5 Watsons Plasters
• 6 Band Plus

16
Pull Experiment

• used spring scale instead of by hand
• (more accurate and easier to measure.)
• Affording weight higher
• ---tensility is better

• put a clip at one side of each plaster

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Pull Experiment

• the other side was connected to a spring scale

pulled the plaster violently
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Pull Experiment
(Results)
The easiest to pull. The stickiest.
the worst (the most change in appearance.)
The best. (Just small change in appearance)
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Pull experiment (failed)

• Use different afford power (Newton)
• -------unfair (a big mistake)

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Pull Experiment2(Forced Degree)

• set the weight, 25N
• pull the plasters with this weight

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Pull Experiment2(results)
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Pull Experiment2results

• the worst
• (the most change in appearance.)

Plasters
1.Standard
2.Watsons
3.Hansaplaste
4.Band Plus
5.Adhesive
6.Banitore
the best (just small change in
appearance)
Hansaplast maintains the first position in both
experiments
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Ventilation Experiment

• Aim
• test the plasters ventilation
• Why?
• it will affect the wound to breathe or the
  healing.
•  

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Ventilation Experiment

• Steps
• 1. drop 2ml alcohol into each test tube
• 2. cover the test tubes with the different
  plasters cotton.
• 3. put all the test tubes near window
• alcohols volatility is better than the others

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Ventilation Experiment(failed)

• not enough time
• dangerous (by heating )
• didn't have other methods.
• Failed the 2nd time
• --due to atypical pneumonia
• (use water to do the second experiment)

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Conclusion
If the number is small, it has the best
performance in this category. --- failed two
experiments (viscosity and ventilation).
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Conclusion

• Arrangement
• 1 Handsaplast
• 2 Banitore
• 3 Adhesive Plaster
• 4 Standard
• Watsons
• Band Plus

• Mistakes
• failed three experiments
• -no enough time
• --environmental errors
• ---our mistakes
• (couldnt concentrate the
• problems to solve)
• We are so sorry that we could
• not give you the exact answers!!

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Conclusion

• Advice
• Standard Adhesive Plasters for fingers
• (contacted with water---good at waterproof )
• Adhesive Plasters for wound is quite large and
  outpour blood
• (absorb blood rapidly.)

• We hope these advise will be useful for you!!

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Reference
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E-mail address
ktgss_3d02_at_yahoo.com.hk
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• The end !