Transcript Understanding the Science Test

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Mark Watrin: Science
Coordinator ESD112
Understanding the Science Test
Mark Watrin
Science Coordinator
ESD112
Predictability
and Feedback
Create realistic models with feedback
loops, and recognize that all models are
limited in their predictive power.
Uncovering Teacher Ideas about the
Science State Test
• How Much of EOC
Biology is:
–
–
–
–
–
Systems
Inquiry
Application
Cell Processes
Populations in
Ecosystems
– Evidence for Evolution
• Make a Pie Graph
Is 50% of your
instruction on
Systems
Inquiry &
Application?
50% of the
test is!
Cells
2007 Lifting a Load
%
2008 How that Plant Got There
Juan de Fuca
100
90
80
70
60
50
40
30
20
10
0
Students
Struggle with
the Short
Answer
Questions
2007 MC
2008 MC
2011 MC
2011 – Source of
matter in a living
system = 34%
2007 SA
Energy inputs and outputs
Open for Questions?
• About Systems
Is it a System?
• Volume 4 page 81
Systems
Science Standards Glossary
Systems.
An assemblage of
interrelated parts or
conditions through
which matter, energy
and information flow.
How do you talk about Systems
• Write down 10 words
that your students
should hear, use and
understand to perform
well on Systems
questions.
9-12 Systems
Feedback
Equilibrium
Input
Output
Matter
Energy
Positive Feedback
Negative Feedback
Static Equilibrium
Dynamic Equilibrium
Model Limits
Changes
models
High
School
Systems
Feedback
Systems within
systems
Model limits
Predict model
limits
2008 Where did that plant come from?
4 Mineral nutrients were added to the water in which the bean plants
were grown. What is one reason plants need mineral nutrients?
o A. Plants need mineral nutrients to eliminate energy.
o B. Plants use the mineral nutrients as a source of energy.
o C. Plants use the mineral nutrients in the process of making food.
o D. Plants need mineral nutrients to take the place of carbon dioxide.
Understanding the input of matter
54%
38%
Open for Questions?
• About Systems
Subsystems in this System
Self Regulating (Negative)
Mitochondria
Cytoplasm
Matter-Glucose , O2
Self Reinforcing (Positive)
Energy- chemical
Systems it is connected to.
Circulatory in humans
Equilibrium:
Cellular
Respiration
Lack of glucose or oxygen in
the cytoplasm triggers
increase movement across
the cell membrane.
“Fill in the
Blanks”
they are
graphic
organizers
to guide
discussions.
Static or Dynamic-
input = output –yes
Predict the results of a
change in the system.
Guides are
not
By glucose & Oxygen supply
(oxygen &glucose supply)
ATP & ADP
Inputs that regulate the
system.
Output of the system
Matter-ATP, H2O,CO2
Energy- chemical potential,
heat
There are
many
possible
“right”
answers
when using
the guides
correctly.
Subsystems in this System
Self Regulating (Negative)
Producers
Herbavoir
Generally over time
Matter- prey population
Omnivoir
Carnivore
Self Reinforcing (Positive)
Decomposers
During short time periods
Systems it is connected to.
Biome
Inputs that regulate the
system.
Energy-chemical
Equilibrium:
Food Web
Static - Dynamic
Carnivore
population
input = output?
Seasons
Predict the results of a
change in the system.
Migration of new carnivores
into the area will change the
balance of a carnivore
population
Output of the system
Matter- Carnivore Population
Energy- Chemical
Terrariums with
limited
biodiversity
may be used to
model real
food webs.
These models
are limited
because they
rarely include
all the species
in an actual
environment.
Subsystems in this System
Self Regulating (Negative)
Genes in the Gene pool
If it does not improve
reproductive potential
Individual organisms
Self Reinforcing (Positive)
If it does improve reproductive
potential
Inputs that regulate the
system.
Matter-Proteins coded by
the gene
EnergyInformation-** genetic
The guide
itself is an
imperfect
model.
Not every
situation will
fit neatly.
Systems it is connected to.
The Environment
Predict the results of a
change in the system.
A changing environment will
favor specific genes in the
gene pool
Equilibrium:
Natural
Selection of
genetic
variation
Static or Dynamic
input = output
Output of the system
Matter- Genes, Proteins
Energy
You will have
to change
and adapt the
guide to
make it fit
specific
scenarios.