Transcript BioProcess Lab - Science Olympiad

BIO-PROCESS LAB (B)
2010
KAREN LANCOUR
Bio-Process Lab
NATIONAL SUPERVISOR
[email protected]
Bio-Process Lab (B)
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Event Description - lab-oriented
competition involving the
fundamental science processes of a
middle school biology lab program
Event – lab practical in stations
Event Parameters – be sure to
check the rules for resources
allowed, type of goggles needed.
TRAINING MATERIALS
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Training Handout – content
Event Supervisor Guide – sample
stations, process skills, methods
Internet Resource – links to on-line
courses, lab manuals, notes, sites
Sample Tournaments – sample stations
with key
Basic Science Process Skills
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Observing
Measuring
Inferring
Classifying
Predicting
Communicating
Integrated Science Process Skills
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Formulating Hypothesis
Identifying Variables
Defining Variables Operationally
Describing Relationships Between Variables
Designing Investigations
Experimenting
Acquiring Data
Analyzing Investigations and Their Data
Understanding Cause and Effect
Relationships
Formulating Models
Student Preparation
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Team work skills
Time limits
Answering questions
Measurement and Calculations
Reference materials
Practice using labs and lab manuels
Construct sample stations
Compound Microscope
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Parts
Making wet mount
Appearance of objects
Movement of objects
Magnification
Changing objects
Estimating size of
objects
Field diameter & area
Principles of Microscopy
Measuring objects
Stereomicroscope
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Parts
Appearance of
objects
Magnification
Advantages
Uses
Observing objects
Electronic Balance
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Capacity
Units
Tare or Zero
Err
Using the Balance
Advantages &
Disadvantages
Triple Beam Balance
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Capacity – auxillary
weights
Units – numbered
and unnumbered
increments
Tare
Using the Balance
Advantages &
Disadvantages
Measuring Liquids
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Meniscus – read bottom
Capacity and Range
Graduations –
numbered and
unnumbered
increments
Readability
Making measurements
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Estimating
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Metric ruler and calipers
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Capacity and Range
Numbered and
unnumbered
increments
cm vs mm
Uses of each
Making
measurements
Estimating
Vernier Scale
Thermometers
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Capacity and Range
Do not start at zero
Numbered and
unnumbered
increments
Uses of each
Making
measurements
Estimating
Probes
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Graphing calculator
Easy link or CBL
Probe
Collect data onto
calculator
Transfer data to
computer
Graph analysis
Quick data
collection
Data Presentation and
Analysis- Data Tables
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Format
Title
Units of
measurement
Numbering
Tables
Source
Leg (thigh) Time of 40 yard
Length (cm) dash (sec)
24
9
31
9.2
37
11
38
10
39
8.2
42
8.4
55
9.3
62
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Data Presentation and AnalysisGraphs
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Graph – types
X vs Y axis
Scaling axis
Plotting points
Human Error
Curve or best fit
line
Labeling
Human Mistakes vs
Experimental Errors
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Human Mistakes – carelessness
Experimental Error – instrument
variation or technique
Random Error – chance variation
Systematic Error – system used for
designing or conducting
experiment
A Sample Dichotomous Key
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1. wings covered by an exoskeleton . . . . . . go to step 2
1. wings not covered by an exoskeleton. . . . go to step 3
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2 body has a round shape.
2 body has an elongated shape.
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3.wings point out from the side of the body . . dragonfly
3 wings point to the posterior of the body.. . . . Housefly
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Note: There should be one less step than the total number of organisms to
be identified in your dichotomous key.
. . . . . . . ladybug
. . . . .grasshopper
Sample Stations – Population
Density
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Measure sample area
Determine population density for symbols
Assign an organism to symbols
Form a food chain
Evaluate sample – predict techniques, etc.
Sample Station –
Dichotomous Key
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Have specimens of leaves
Formulate a key or use a key to identify
specimens
Sample Station - Measurement
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Identify range, capacity, incrementation
Do measurement – estimate last digit
Sample Station – Experiment
Analysis
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Analyze the design of the experiment
Identify variables
Explain results – form conclusions
Sample Station – Microscopy
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Determine the diameter of the field and the
length of one cell in mm and convert to
mcm.
Sample Station –
Data Analysis
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Making hypotheses
Food web analysis
Eating habit analysis
Predictions and
conclusions
Inferences
Sample Station – pH
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Determine the pH of various solutions
using either pH probe or pH test papers.