bio-process lab (b) 2010 bio-process lab (b) 2010 karen lancour bio-process lab national supervisor...
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BIO-PROCESS LAB BIO-PROCESS LAB (B) (B) 2010 2010
KAREN LANCOURKAREN LANCOUR Bio-Process LabBio-Process Lab
NATIONAL SUPERVISORNATIONAL [email protected]
Bio-Process Lab (B)
Event Description -Event Description - lab-oriented lab-oriented competition involving the competition involving the fundamental science processes of fundamental science processes of a middle school biology lab a middle school biology lab programprogram
Event – Event – lab practical in stationslab practical in stations Event Parameters – be sure to be sure to
check the rules for resources check the rules for resources allowed, type of goggles needed.allowed, type of goggles needed.
TRAINING MATERIALS
Training HandoutTraining Handout – content Event Supervisor GuideEvent Supervisor Guide – sample
stations, process skills, methods Internet ResourceInternet Resource – links to on-line
courses, lab manuals, notes, sites Sample TournamentsSample Tournaments – sample
stations with key
Basic Science Process Skills
ObservingObserving MeasuringMeasuring InferringInferring ClassifyingClassifying PredictingPredicting CommunicatingCommunicating
Integrated Science Process Skills
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
Team work skillsTeam work skills Time limitsTime limits Answering questionsAnswering questions Measurement and CalculationsMeasurement and Calculations Reference materialsReference materials Practice using labs and lab manuelsPractice using labs and lab manuels Construct sample stations Construct sample stations
Compound Microscope
Parts Parts Making wet mountMaking wet mount Appearance of Appearance of
objectsobjects Movement of objectsMovement of objects MagnificationMagnification Changing objectsChanging objects Estimating size of Estimating size of
objectsobjects Field diameter & areaField diameter & area
Principles of Microscopy
Measuring objects
Stereomicroscope PartsParts Appearance of Appearance of
objectsobjects MagnificationMagnification AdvantagesAdvantages UsesUses Observing Observing
objectsobjects
Electronic Balance
CapacityCapacity UnitsUnits Tare or ZeroTare or Zero ErrErr Using the Balance Using the Balance Advantages & Advantages &
Disadvantages Disadvantages
Triple Beam Balance Capacity – auxillary Capacity – auxillary
weights weights Units – numbered Units – numbered
and unnumbered and unnumbered increments increments
Tare Tare Using the Balance Using the Balance Advantages & Advantages &
DisadvantagesDisadvantages
Measuring Liquids
Meniscus – read Meniscus – read bottom bottom
Capacity and Range Capacity and Range Graduations – Graduations –
numbered and numbered and unnumbered unnumbered incrementsincrements
ReadabilityReadability Making measurementsMaking measurements
Estimating Estimating
Metric ruler and calipers Capacity and Range Numbered and
unnumbered increments
cm vs mm Uses of each Making
measurements Estimating Vernier Scale
Thermometers Capacity and RangeCapacity and Range Do not start at zeroDo not start at zero Numbered and Numbered and
unnumbered unnumbered incrementsincrements
Uses of eachUses of each Making Making
measurementsmeasurements EstimatingEstimating
Probes Graphing Graphing
calculatorcalculator Easy link or CBLEasy link or CBL ProbeProbe Collect data onto Collect data onto
calculatorcalculator Transfer data to Transfer data to
computercomputer Graph analysisGraph analysis Quick data Quick data
collectioncollection
Data Presentation and Analysis- Data Tables
Format Format Title Title Units of Units of
measuremenmeasurementt
Numbering Numbering TablesTables
SourceSource
Leg Leg (thigh) (thigh) Length Length (cm)(cm)
Time of 40 Time of 40 yard dash yard dash (sec)(sec)
2424 99
3131 9.29.2
3737 1111
3838 1010
3939 8.28.2
4242 8.48.4
5555 9.39.3
6262 99
Data Presentation and Data Presentation and
Analysis-GraphsAnalysis-Graphs Graph – types Graph – types X vs Y axisX vs Y axis Scaling axisScaling axis Plotting pointsPlotting points Human Error Human Error Curve or best fit Curve or best fit
line line Labeling Labeling
Human Mistakes vs Experimental Errors
Human Mistakes – carelessness Human Mistakes – carelessness Experimental Error – instrument Experimental Error – instrument
variation or technique variation or technique Random Error – chance variationRandom Error – chance variation Systematic Error – system used Systematic Error – system used
for designing or conducting for designing or conducting experiment experiment
A Sample Dichotomous Key
1. wings covered by an exoskeleton . . . . . . go to step 2 1. wings not covered by an exoskeleton. . . . go to step 3
2 body has a round shape. . . . . . . . ladybug 2 body has an elongated shape. . . . . .grasshopper
3.wings point out from the side of the body . . dragonfly3 wings point to the posterior of the body.. . . . Housefly
Note: There should be one less step than the total number of organisms to be identified in your dichotomous key.
Sample Stations – Population Density
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
Have specimens of leaves Formulate a key or use a key to identify
specimens
Sample Station - Measurement
Identify range, capacity, incrementation Do measurement – estimate last digit
Sample Station – Experiment Analysis
Analyze the design of the experiment Identify variables Explain results – form conclusions
Sample Station – Microscopy
Determine the diameter of the field and the length of one cell in mm and convert to mcm.
Sample Station – Data Analysis
Making hypothesesMaking hypotheses Food web analysisFood web analysis Eating habit Eating habit
analysisanalysis Predictions and Predictions and
conclusions conclusions InferencesInferences
Sample Station – pH
Determine the pH of various solutions using either pH probe or pH test papers.