BIO-PROCESS LAB BIO-PROCESS LAB (B) (B) 2010 2010

KAREN LANCOURKAREN LANCOUR Bio-Process LabBio-Process Lab

NATIONAL SUPERVISORNATIONAL SUPERVISORkarenlancour@charter.net

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.