A research presented by: Capulong, Miguel A.

Cube, Francis Andrew B.

Javier, Reicherr C

III - SSC

Blowing BubblesAdopted from: Nathalie Valencia Chacon

Place the glass inside the basin. Fill the glass halfway with water. Add 1 tbsp. of shampoo to the water. Stir lightly Each person in the group will take a straw. Wait for my instructions. On my go signal, everyone must blow the water

through the straws. Observe what is taking place. Stop blowing when I say so.

Blowing Bubbles

Blowing Bubbles

Using a marker, write your observations in large enough letters to be seen when posted on the board.

Blowing Bubbles

On another sheet/s of paper, complete the following sentence based on your observations or you may make conjectures based on your ideas.

“______________ affect(s) the __________ (of the bubbles).”

You may make several statements. You have 3 minutes to do this. After 3 minutes, post your work on the board.

Blowing Bubbles

In this part of the activity, you will be exploring what happens to the bubbles when some conditions are changed.

You will have to make several decisions

Blowing Bubbles

First, choose one condition that affects the bubbles. This should be the condition that you want to explore by

some manipulation. You must have two or three manipulations in this

condition (such as different magnitudes, with or without something).

Blowing Bubbles

Second, decide what about the bubbles you will observe when you manipulate this condition.

You will be running one trial for each manipulation. But before you do the trials, you must decide what

conditions will be kept the same through different trials

Blowing Bubbles

Then make a tentative guess about what is going to happen to the bubbles when you manipulate this condition.

Blowing Bubbles

Write your decisions/ ideas on a formatted sheet using a marker and post on the board.

After 3 minutes to do this. After 3 minutes, post your work on the board and proceed to the trials.

Blowing Bubbles Format

Condition to manipulative/ explore (only one):

Manipulations (2 to 3)

What to observe about the bubbles:

Conditions that will be kept the same during trials:

Tentative guess at to what will happen (complete sentence)

Blowing Bubbles After the Trials

Write a brief report on your observations using a marker. The statement must contain – The condition you manipulated The different manipulations What you have observed about the bubbles during the

trials The conditions you have kept the same during the trials.

You have 5 minutes to do this. Post your work on the board.

Blowing Bubbles

This activity was adapted from the material included in the students as Scientist Training (Costa Rica) by Nathalie Valencia Chacon.

JOSEPH SIMON A. MADRINAN As lifted from presentation by Harold Mendiola c 2007

Variables in Research

properties being investigated, or conditions being manipulated or varied

signified a property or a factor whose changes can be measured

Variables

height

TEMPERATUREweight

speed

volume

pressureconcentration

Presence/absence

mass

Population sizeAMOUNT

Variables

Variables

Dependent

variable

Extraneous variable

Independent

Variable

(Experimental, Manipulated,

Treatment , Grouping)

Manipulated, measured, or selected by the researcher as an antecedent condition to an observed behavior

In cause-and-effect relationships, the independent variable is the cause

Independent

variable

(Outcomes or Responding)

Factor which is observed and measured to determine the effect of the independent variable

Factor that appears, disappears, or varies as the experimenter introduces, removes, or varies the independent variable

Dependent

variable

Dependent

variable

Cannot be manipulated

(inherent classificatory

attribute variable

Can be manipulated

(active variable

Extraneous Variable

The parts of the experiment that remain the same

Factors must be kept constant in all experimental runs

Independent Variable

Dependent Variable

Extraneous Variable

End of Presentation…