1BIO-PROCESS LAB (B) 2010 KAREN LANCOUR Bio-Process Lab NATIONAL SUPERVISOR
2Bio-Process Lab (B)Event Description - lab-oriented competition involving the fundamental science processes of a middle school biology lab programEvent – lab practical in stationsEvent Parameters – be sure to check the rules for resources allowed, type of goggles needed.
3TRAINING MATERIALS Training Handout – content Event Supervisor Guide – sample stations, process skills, methodsInternet Resource – links to on-line courses, lab manuals, notes, sitesSample Tournaments – sample stations with key
4Basic Science Process Skills ObservingMeasuringInferringClassifyingPredictingCommunicating
5Integrated Science Process Skills Formulating HypothesisIdentifying VariablesDefining Variables OperationallyDescribing Relationships Between VariablesDesigning InvestigationsExperimentingAcquiring DataAnalyzing Investigations and Their DataUnderstanding Cause and Effect RelationshipsFormulating Models
6Student Preparation Team work skills Time limits Answering questions Measurement and CalculationsReference materialsPractice using labs and lab manuelsConstruct sample stations
7Compound Microscope Parts Making wet mount Appearance of objects Movement of objectsMagnificationChanging objectsEstimating size of objectsField diameter & area
10Stereomicroscope Parts Appearance of objects Magnification Advantages UsesObserving objects
11Electronic Balance Capacity Units Tare or Zero Err Using the Balance Advantages & Disadvantages
12Triple Beam Balance Capacity – auxillary weights Units – numbered and unnumbered incrementsTareUsing the BalanceAdvantages & Disadvantages
13Measuring Liquids Estimating Meniscus – read bottom Capacity and Range Graduations – numbered and unnumbered incrementsReadabilityMaking measurementsEstimating
14Metric ruler and calipers Capacity and RangeNumbered and unnumbered incrementscm vs mmUses of eachMaking measurementsEstimatingVernier Scale
15Thermometers Capacity and Range Do not start at zero Numbered and unnumbered incrementsUses of eachMaking measurementsEstimating
16Probes Graphing calculator Easy link or CBL Probe Collect data onto calculatorTransfer data to computerGraph analysisQuick data collection
17Data Presentation and Analysis- Data Tables FormatTitleUnits of measurementNumbering TablesSourceLeg (thigh) Length (cm)Time of 40 yard dash (sec)249319.237113810398.2428.4559.362
18Data Presentation and Analysis-Graphs Graph – typesX vs Y axisScaling axisPlotting pointsHuman ErrorCurve or best fit lineLabeling
19Human Mistakes vs Experimental Errors Human Mistakes – carelessnessExperimental Error – instrument variation or techniqueRandom Error – chance variationSystematic Error – system used for designing or conducting experiment
20A Sample Dichotomous Key 1. wings covered by an exoskeleton go to step 2 1. wings not covered by an exoskeleton. . . . go to step 32 body has a round shape ladybug 2 body has an elongated shape grasshopper 3.wings point out from the side of the body . . dragonfly 3 wings point to the posterior of the body HouseflyNote: There should be one less step than the total number of organisms to be identified in your dichotomous key.
21Sample Stations – Population Density Measure sample areaDetermine population density for symbolsAssign an organism to symbolsForm a food chainEvaluate sample – predict techniques, etc.
22Sample Station – Dichotomous Key Have specimens of leavesFormulate a key or use a key to identify specimens
23Sample Station - Measurement Identify range, capacity, incrementationDo measurement – estimate last digit
24Sample Station – Experiment Analysis Analyze the design of the experimentIdentify variablesExplain results – form conclusions
25Sample Station – Microscopy Determine the diameter of the field and the length of one cell in mm and convert to mcm.
26Sample Station – Data Analysis Making hypothesesFood web analysisEating habit analysisPredictions and conclusionsInferences
27Sample Station – pHDetermine the pH of various solutions using either pH probe or pH test papers.