1. Collect
Graph
Analyse
Les Black
Mobile 027-2211365
www.electroflash.co.nz
2. David was a physics teacher, who:
• Wrote software for PASCO.
• Created “Graphical Analysis”.
• Wanted to make datalogging available & affordable for all.
• Makes probes for many datalogger companies.
• Uses teachers to develop & test products.
• Makes the most reliable and useful datalogging systems.
David and Christine Vernier
4. Sensor
LabQuest mini
LoggerPro interface
software
LoggerPro
5. Install probe – auto recognition!
Press start (adjust settings if necessary)
Stop (graph will auto scale)
Analyse (on colour screen or on computer)
Totally portable …. Rechargeable battery …. Save files to the logger
Full graphical analysis …. Colour screen LoggerPro
6. Collect data on Labquest
Save data file into LabQuest
Connect to a computer.
Connection will be recognised
and data downloaded
Connect to computer and
automatically download file.
Or try the Wireless Dynamic System.
7. Enter your data manually or via a logger then….
Manual analysis
Predict relationship from graph shape
Change the power of a variable
Convert to a linear graph y=mx + c
Software modeling
Get LoggerPro to do it for you.
Eg Analyse / curve fit / define relationship
Error bars– YES! percentage, absolute, variable
LoggerPro
8. Experiment manuals
• Written by teachers for the US education system.
• Supplied with disk of files in Word format
(great for cutomising for our schools).
• Each experiment has a file in LoggerPro which
sets up data collection automatically
9. Experiments with dataloggers .
• Biology – “Cell Respiration video”
• Chemistry – “Acid-BaseTitration video”
• Physics – “Ball Toss video”
From Vernier support disk
All experiments in the manuals link to a file in LoggerPro
software to automatically set up the collection rate & graph(s).
10. • Prediction (drawing graph patterns)
• Graph matching (walk the graph)
• Comparisons
• Defining a relationship
• Voice printing (and FFT)
• Interactive demonstrations
• Video analysis
• Use as an oscillosope & frequency generator
11. • Why do voices sound different when singing the same note?
• How can I accurately measure the speed of sound?
• Would an adult or a baby suffer from hypothermia first?
• How effective is penguin behaviour in keeping each other warm?
• How quickly do streams cool in cold air temperatures?
• Does the temperature of a fridge vary throughout a day?
• What clothing fabrics best protect us from heat loss?
• What rides give us the greatest acceleration?
• What substances are the most radioactive?
• How can I show standing waves?
• How do transpiration rates differ between plants?
12. • Appeal to many students
• Remove the boredom of some measurements.
• Improve accuracy of measurements
• Improve analysis
• Enable some measurements to be made (that couldn’t
be done in any other way).
• Makes results real and immediate
• Tufts University research + interactive demonstrations
* Outcomes
* Strategies
21. Sound waves
Standing waves and speed of sound experiments
Sound from a tuning fork
Also excellent for BEATS
Using FFT to analyse a sound into
its component frequencies
22. Radioactivity
• Detection (alpha, beta and gamma)
• Spectrum of emission levels
• Effectiveness of Shielding
• Decay curve
• Identification of radioactive materials
