Detect invisible infrared waves with a Crookes Radiometer.
Crooked Radiometer Explained
How does a Light Mill Work
Experiments with the Radiometer
Are goldfish active by day? Could you switch their day-night
cycle? Do they anticipate food?
Setting up the Goldfish Aquarium
Food for Thought
How to Train a Fish
Checking Goldfish Activity with an Infrared
Advanced Video Sensing System for Tracking
Are heavy backpacks dangerous to health?
Backpacks and Back Pain in Children
Backpacks for Students
Back Pain from Backpacks
Backpack Misuse Leads to Chronic Back Pain
Backpack Weight is Studied
Plotting Backpack Data
A Pain in the Backpack
Safety Through Design
Are there different amounts of iron in different breakfast
Iron in Ready-To-Eat Breakfast Cereals
Iron for Breakfast Kit
How To Get the Iron Out of Cereals
At what pressure do basketballs bounce highest? (Use a video
Build a hovercraft that can lift a human being.
Build a levitating magnetic train.
How Maglev Trains will Work
Track to the Future
Make a Maglev Train
Advanced Maglev Train
Scientific American Article
Build a mechanical toy for your pet dog or cat.
Cat Toys and How to Use Them (safety issues)
Dog Toys and How to Use Them (safety issues)
Cat Science Fair Projects
Cat CD with Birds and Rodents
Do Cats Watch TV?
Dog Science Fair Project Kit
Build a sundial, test it, and answer the questions on NASA’s web
Build a Simple Sundial
American Sundial Society
Six Simple Sundial Projects
The British Sundial Society
A Sundial on Mars
Build a working crystal radio that needs no power whatsoever.
(Bring it to Mitchell for a test.)
No Frills Radio: The Crystal Set
Crystal Radio Set Systems: Design, Measurement and Improvement
Build a Simple Crystal Radio
History of Radio
Build model houses of brick and wood and test for earthquake
resistance on a shake table.
Build Your Own Shake Table
More Shake Table Designs
A Professional Shake Table Experiment
A Very Simple Shake Table
Shake Table Videos
Earthquake Projects from the USGS
Build your own telescope from a copier lens.
Construct Your Own Copyscope
Purchase a Lens
Build a Copyscope
Can an owl’s diet be determined by looking at its pellets?
Original Owl Pellet Source
Virtual Owl Pellets
Owl Pellet Bone Guide
Information on Owl Pellets and Owls
Can I build a strong electric magnet? Can I fling a ring with
Build a professional-looking car ramp and race model cars
Go Far Car Ramps
Inertia and Model Cars
Speed of a Toy car Rolling off a Ramp
Can the chirp-rate of a cricket be used to tell the temperature?
Cricket Chirps and Temperature
Cricket Chirp Converter
From the Old Farmer’s Almanac
Basic Information on Crickets
Can you read weather patterns from tree rings?
Trees as Indicators of Climate Changes
Tree Rings: A Study of Climate Change
Tree Rings: Ancient Chronicles of
How do We Know: Tree Rings
World Data Center for Paleoclimatology
News and Articles on Dendrochronology
Collect and study micrometeorites with a microscope and a
magnet. Check your farm’s rock pile for larger meteorites.
Guide to Micrometeorites
How to Identify Meteorites
How to Identify a Meteorite
A NOVA site
An Introduction to Meteorites
Compare insulators of known R-values in a model home built by
Build your solar water heater.
Build Your Own Solar Water Heater
Seven Designs for Solar Heating
Very Simple Solar Water Heater
Solar Collector Science Fair
A Score of Solar Energy Projects
Can polarized light be used to create automatic "headlight
Polarized Light in Nature and Technology
Article on Polarized Light with Activities
Make a stained glass window without glass.
Polarized Light Mosaic
Create your own magic squares and explain how it is done.
What is a Magic Square
Construct Magic Squares
Magic Squares Galore
Do boys and girls watch different TV programs? Who watches more?
Television Viewing Patterns
Children's Viewing Habits
How to Graph your Data
Statistics on TV viewing Habits
Limits on Children’s TV Viewing from
Does wearing glasses affect your peripheral vision? What else
might affect peripheral vision?
An Exploratorium Snack
Project at Randolph Macon College
View a bug remotely through an electron microscope.
Welcome to Bugscope
Do household disinfectants promote bacterial resistance?
Facts on Resistant Bacteria
Buy a binary clock and explain it Learn much more by building
the clock yourself.
Powers of Two Clock
Examine a spider web under a microscope.
Observing a Spider Web
Construction of a Wheel Web
The Spider Web
(for spider lovers only)
About how often do large meteor strikes occur? Do the largest
Examine the bacteria found in common yogurt under a microscope.
Observing Bacteria Cultures in Yogurt
Observing Bacteria Cultures in Yogurt (part
How accurate is the Weather Channel? (Compare with a variety of
National Weather Service
Major Advance in Weather Prediction
Are base 16 or base 12 numbers superior to base 10? Can you use
negative numbers to form a base for counting?
Base sixteen proponents
Base twelve proponents
A Love Affair with Dozens
Base Negative Two
How do we tell how far away a star is from Earth?
Introduction to Parallax
Observing Parallax in the Field
How Do We Measure Distance to Stars
How Accurate is Parallax?
How does an electric light diminish over time? How long do bulbs
Incandescent Light Bulb
Great Internet Light Bulb Book
How does temperature affect the bounce of a super ball?
Happy and Sad Balls and Temperature
The Effect of Temperature on a Bouncing Ball
Bouncing Ball and Physics
How does temperature affect the bounce of balls that you’d
normally use for playing sports?
The Way the Ball Bounces
On The Ball
Tennis Ball Experiment
How does the height of a dropped object affect the crater it
makes in loose soil?
The Cratering Process
Impact Study of Falling Objects
Meteoroids and the Craters They Make
How does the thickness of motor oil (and other liquids) change
What Does Weight Mean on a Can of Motor Oil?
Viscosity and Temperature
Liquids have Different Viscosities
FAQ on Motor Oils
How does the time of day affect Web page retrieval time?
Internet Traffic Report
The Need for Speed
W3C Recommendations Reduce "World Wide Wait"
How fast does an earthworm tunnel? (Convert into soil
Worm Facts – The Adventures of Herman
Virtual Earthworm Tour
Your Garden’s Best Friend
Build a Wormery
How many types of insects exist in a six-inch cube of farmland?
(Use a sieve.)
Orders of Insects
Bugs Beat All in Biodiversity
How to Explore Biodiversity
Measure the diameter of the sun and moon.
Finding the Size of the Sun and Moon
Find the Angular Diameter of the Sun
Just How Big is the Sun?
Measuring the Diameter of the Sun
Photograph the webs from different spiders (highlight with spray
paint). Why are they different?
The Spider’s Parlor
Plants and Animals: Spider Facts
Preserving a Spider Web
Spider Web Preservation
Build an Orb Web
Spider Web Information
What are coprolites? Why are they important to the study of
dinosaurs? How else can you study dinosaurs?
Coprolites – Fossilized Dung
What is happening to South Dakota’s population and to its
Animated Maps of Population and Crops
Earth Resource Observation Systems (EROS) Data Center
South Dakota Quick Facts
South Dakota Profile
What happens when I put two computer chess programs in
Computer Chess Programs
Computer Chess Explained at Wikipedia
What is the "golden section"? Where does it appear in nature?
What is the average weekly difference between above ground and
below ground temperatures?
Measuring Ground Temperatures Over Time
How does the Plant Hardiness Zone Map affect South Dakota’s
Plant Hardiness Zone Map
What is the best way to melt ice?
Melting Ice Safely
Comparison of Ice Melting Chemicals
Melting Snow and Ice with Salt
Why Does Salt Melt Ice? Good Animation
The Best Way to Melt Ice
What are the mathematics of the musical scale? How can this be
What shape makes for the fastest playground slide?
The Brachistochrone Problem
The Helen of Geometers
Which wood glue is best? Can you make a better glue than
A Comparison of Home-made and Commercial
Survey of Wood Adhesives
Which rolls faster down an inclined plane, a hoop or a disk of
Disc and Ring
Another Disc and Ring
Which types of fabric are the most flammable? (Have an adult
Why does a child’s balloon suddenly pop?
Soap Bubble Gallery
How to Make Super Bubbles
Article on Bubbles
Math From Soap Bubbles
Soap Films Made Easy
Draw holograms by hand.
Hand Drawn Holograms
Build this charge detector.
Ridiculously Sensitive Charge Detector
Static Electricity Page
What is Static Electricity?
Basics of Static Electricity
Generate a tornado in a box and explain how tornados work.
Tornado Generator Box
The Basics About Tornados
Build Lord Kelvin’s thunderstorm electrostatic generator.
Lord Kelvin's Water-Drop Electrostatic
High-Voltage, High-Current Electronics
Picture of Lord Kelvin's Water Drop
In-Line Water Drop Electrostatic Generator
Build a high voltage Van de Graaff electrostatic generator.
Van de Graaff Electrostatic Generator
How Van de Graaff Generators Work
A Double Van de Graaff
Build a Van de Graaff
History of the Van de Graaff
Electric Blue Sparks!
Are body skin temperatures normally distributed?
Data on Body Temperatures
Temperature Regulation of the Human Body
Skin Temperature of a Healthy Human
Histogram Site for Graphing Temperatures
Which golf ball flies farthest?
Golf Ball Launch Contest
The Physics of Golf
Mass of a Golf Ball
Longest Distance of Golf Ball
All About Earthworms
Activities from Wormwatch
Behavior and Adaptations
Verify the Birthday Paradox.
Study two coupled pendulums. What would happen if you used three
Collect rocks and minerals and identify them.
Rockhound Home Page
Rock Identification Tables
Rock Identification Science Project
Rock Identification Chart
Rocks for Kids
How to Identify Minerals
Report on the geology of South Dakota.
The Geology of South Dakota
South Dakota State Minerals
SD Tech Geological Association
Virtual Geology Field Trip of the Black Hills
Wikipedia article on the Black Hills
Geology of the Badlands
Photograph snow crystals.
NOAA Photo Gallery
Paper Snowflakes Modeled on Real Ones
Wilson A. Bentley, the Snowflake Man
Find the speed of sound.
Speed of Sound
NASA on Speed of Sound
Launch a model rocket and explain it.
From Apogee Components
Association of Rocketry
NASA Beginner’s Guide to Rockets
Investigate surface tension.
From the Wikipedia
Surface Tension Experiment
Fun Science Gallery
Surface Tension Driven Flow
Surface Tension and Temperature
Make a herbarium of prairie plants.
Fairchild Virtual Herbarium
Make Your Own Herbarium
How to Start Your Own Herbarium
Book on Plants of SD
Experiment with acids and bases.
Acids and Bases
Exploring Acids and Bases
Chem4kids Acids and Bases
Record the songs of birds.
How to Record the Songs of Birds
What Bird Songs Mean
Birds, Birds, Birds
Bird Song Sound Clips