1.4 Balloon on a string - Doing research

• Natuurkunde / Scheikunde
• Middelbare school
• vmbo b, k, t, havo, vwo
• Leerjaar 1-3

Regels van orde

1e keer:  Waarschuwing --> Maximaal 2 namen op het bord

2e keer: Kleine schrijfopdracht in kabinet --> Max. 2 keer

3e keer: Eruit, naar Loket 21 + werkinhaaluur

Nooit! 

Oordopjes in 
Gooien + Rotzooi maken + Klooien
Eten/drinken 

Mutsen op / Jassen aan / Tassen op tafel  

Get your things please:                                

1.4 Balloon on a string - Doing research

• Quiz = Repeating research report 
• Instruction on research setup + Demo
• Make groups & Formulate Research Question & Hypothesis
• Do research in group --> Next lesson: write report separately
• Write down the apparatus & method
  

Learning objectives

• You can do a simple reseach.
  
  
• You can write a research report on a research you did.

Exchange:
Repeating research report

V5

V2

Research report - structured

0. Title, names, class, date

1. Research question: A question that describes what you want to find out.
   
2. Hypothesis / Prediction: Describe what you predict the answer to be.
3. Apparatus: Describe what you need.
4. Method: Describe what you will do.
5. Observations: Describe what you see, hear, smell, taste, feel.
6. Results & Conclusion: Try to explain the observations.
   Answer the research question if possible.
7. Suggestions: You can make suggestions about further research.

Research report - structured

1. Research question
2. Hypothesis / Prediction
3. Apparatus Beware: Apparatus means 'inrichting', 'benodigdheden',
   NOT 'apparaat'!
4. Method
5. Observations
6. Results & Conclusion
7. Suggestions

Balloon on a string

What do we have?
A balloon filled balloon attached to a horizontal string.

What will we do?
Let the air out so it will start moving.

Important

• Hold the string really tight & straight
  
  
• Film in slow motion
  make separate movie of a clock for 10 seconds!
  
  
• Go in front of lockers:
  Fixed distance: Measure width of locker

What will we do?
Let the air out so it will start moving.

Make groups of three

Take 5 minutes to:

• Formulate a research question
  something with speed/velocity
• Formulate a simple hypothesis
  
  
• Come to us-->  if OK, then start!
  
•                 ack at 12:40 to write down your method & hypothesis

12:15

Be back at 12:40

Be back at 12:40

Before the end of the lesson,
Share the movies of balloon and clock with your partners!
work separately on report  write down:

3. Apparatus: Describe what you used.

4. Method: Describe what you did.
if there is time left, work on observations results and conclusion.

12:50

Suggestions?

Is the speed of the balloon constant?

What would be your research suggestions,
for further reasearch?

12:50

Homework

Read chapter 1.4

Do exercises
35, 36, 41, 45 of chapter 1.4

 = Homework

..:..

Measuring: Always inaccuracy

Quantities & Units

quantity	symbol	unit	abbreviat.	m. instrum.
mass	m	kilogram	kg	scales
volume	V	litre	L	graduated cylinder
length/distance	l / s	metre	m	ruler, measuring tape
temperature	T	degree Celcius	°C	thermometer
time interval	t	second	s	clock, stopwatch
number	-	-	-	counter