This document discusses the key components of a hypothesis-based science investigation and capstone research project. It explains that a hypothesis is an educated guess that aims to explain a research question. The scientific method is then outlined as asking a question, forming a hypothesis, planning an experiment to test the hypothesis, collecting and analyzing data, and drawing conclusions. Variables, populations or groups, and maintaining a representative sample are also discussed. Two examples of science investigatory projects are provided, one comparing the voltage capacity of natural dye extracts, and another examining the effect of different colored UV lights on plant growth.

1. HYPOTHESIS-BASED
INVESTIGATION
CAPSTONE RESEARCH
THELMA V. VILLAFLORES

2. observation generalization questions
explanations
controlled
experimentation
inquiry-based
investigation
propose & test a
hypothesis
discovery-based
hypothesis-based
THELMA V. VILLAFLORES

3. HYPOTHESIS
An educated guess or a
supposition that explains
a research question.
THELMA V. VILLAFLORES

4. SCIENTIFIC METHOD
Ask a question or state a
purpose.
PROBLEM
01
What do you think will happen
when you perform your
experiment?
HYPOTHESIS
02
Observe and collect
data. Analyze the
results. Express results
through graphs, charts,
or tables.
results
04
Plan the methods to test the
hypothesis. Consider the
variables to be included and
the number of times the
tests need to be repeated.
procedure
03
Draw your conclusions
based on your results.
conclusion
05
THELMA V. VILLAFLORES

5. ✓ aims to establish
specific detailed
information or
characteristics
about a given group
Science Investigatory Project
THELMA V. VILLAFLORES

6. Variable
A test subject’s
characteristic that can
change (or is allowed to
change)
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7. ▪ How to maintain that
the data collected
comes from a
homogenous (similar)
representation of the
target population
▪ How much sample is
large enough to obtain
a representative
sample
Concerns
Type of Data Quantity of Data
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8. Sample…
THELMA V. VILLAFLORES
Title Objective Variable Population or
Group
Remarks
Feasibility of Dye-
Sensitized Solar
Cells using
Curcuma Longa,
Cassia Alata, and
Origanum Vulgare
Dye Extracts in
Electricity
Generation
To compare
the voltage
capacity of the
natural dye
extracts from
the three set-
ups
Degree of
electricity
Curcuma Longa,
Cassia Alata, and
Origanum
Vulgare
Use of dye-extracts
in generating
electricity

9. ✓ also aims to apply a
treatment on a test
subject in a controlled
way and to collect data
in response to the
experimental condition
Science Investigatory Project
THELMA V. VILLAFLORES

10. Sample…
THELMA V. VILLAFLORES
Title Objective Experimen
tal
Treatment
Control
Variable
Population or
Group
The Effect of
Different Colored
UV- Lights on the
Growth Patterns of
Pechay
To compare
the effect of
different
colored UV
lights on the
growth
patterns of
Pechay
Pechay
seedlings
exposed to
different
colored UV
lights
Pechay seedlings
not exposed to
UV Lights
Pechay seedlings

11. Exploring Life through Science
Capstone Research Project
Ramos, et al. (2017) Phoenix Publishing
House pp. 6-9
REFERENCE