anybody how to build a model ferris wheel or merry-go-round?? or something like that!!?
545902
Really easy project: http://www.hilaroad.com/camp/projects/clinometer/clinometer.html\n\nEasy trebuchet: http://hila.webcentre.ca/projects/trebuchet/index.htm\n\nEasy dome: http://www.hilaroad.com/camp/projects/dome/dome.html\n\nMeasure the diameter of the sun with geometry: http://www.hilaroad.com/camp/projects/pinhole_sun/sun_diameter.html\n\n\n\nA suspension bridge would be a nice project because the shape of the main cables that holds up the bridge is a mathematical curve called a "catenary."\n\nhttp://www.infovisual.info/05/028_en.html\nhttp://en.wikipedia.org/wiki/Suspension_bridges\nhttp://en.wikipedia.org/wiki/Catenary  (This article explains that the St. Louis Arch is an inverted catenary, and it even gives it's dimensions and the formula of the curve.  You could make a scale model.)\n\nAnd, it looks like I'm wrong  about suspension bridges.  Their main cables are parabolas, because of the weight of the deck.\n\nHere are some more projects you can check out:\n\nhttp://www.astrocappella.com/activities/cosr_lp.html (make the umbrella rigid by painting plaster on it)\n\nSolar reflectors would be good projects using parabolas: \nhttp://www.hilaroad.com/camp/projects/solar_energy/Hila_Solar_Energy.html\nhttp://www.cockeyed.com/incredible/parabola/parabola.html\nhttp://www.humboldt.edu/~ccat/solarcooking/parabolic/parabolic_solar_cooker_pg_3_html.htm\nhttp://peacecorps.mtu.edu/solarcookers.htm\nhttp://jc-solarhomes.com/fair/parabola20.htm
181390
Get wooden matchsticks and cut the heads off of them.  Then it is a simple means of making the design and building it.\n\nOr you can order this kit.
191596
Sounds like you're talking about a magnetic levitation train or maglev for short. This is not an easy project and you will likely have to fabricate the magnetic track and induction coils (still do some searching, but I don't know of anyone that carries model sized maglev material). I have included a couple of links for you to get started with. Good luck!
248386
I have seen a model of Sydney opera made of wooden ice loly sticks.They are cheap and can be easily modifing material.\npick ur best answer.
837467
Look on Ebay (they have everything), to get ideas and supplies. I did all my own and they came out super nice!
761342
We did something like this in my physics lab with an Atwood machine.  It was a pully with weights hanging from it.  I can't exactly remember how it worked, but maybe this will inspire you.  We also did something with an air track and these two masses colliding and we'd see which one would go in which diretcion.  You need a nearly frictionless surface, like an air hockey table or ice slab.
603543
Try this open source 3D engine.  It's open source, so it's free:   http://www.ogre3d.org/
940257
I'd try a craft store, or a model/hobby store in your area, or try the links below.
338891
Try these:\n\nhttp://www.officialcornhole.com/baggo_cornholeproducts.html\n\nhttp://thefuntimesguide.com/movabletype/archives/2005/08/build_cornhole.html
800550
Go to a "game store" and look for a three dimensional puzzle, or some other similar puzzle.\nA company called "Binary Arts" used to make a couple of good ones.
1052452
make anything out of the following\nperiscope\nvolcano (Although I don't suggest this - it is a very old project and maybe many will turn up using this)\nA mini hovercraft or hot air baloon (info can be found on net)\nI don't know what it is called but if you know that thing in which we have to take a small hoop across a wire (which is not straight) without touching it. If touched, it will make a sound.\n\nIf none of this suits you, you might watch Backyard Science at National Geographic Channel
1172427
Hey if you really want to know go to: http://www.gemcar.com/  not only can you find your answer it will tell you how to build one......good luck
149750
If you have to actually build this thing then a castle-style drawbridge would probably be the easiest thing I can think of. \n\nBuild a tower out of boxes, wood or whatever. If you’re real lazy simply stand a shoebox on its end and paint an archway on what was the bottom.\n\nCut a piece of cardboard slightly narrower than the base of the box and about 8 inches long. That piece of cardboard is your span.  Bend the first couple of inches of the cardboard up at right angles. Push thumbtacks through that bent up section and into the tower a few inches above the tabletop. That way when the span is lowered it will slope downwards on to the table.\n\nPass a piece of wire through a cotton spool and bend both ends around to make a U shape. Bend the ends of the “U’ shape into tight circles. You can now put a screw through those circles and into a piece of light wood/heavy card that you can glue to the tower somewhere near the top.\n\nPoke a hole in the free end of the span. Tie some thread through it. Pass the thread around the cotton spool a few times. \n\nYippee, finished in one afternoon.\n\nWhen you turn the spool the span will lift. The spool is both a wheel and a pulley system. The span itself functions as a lever. Because the span slopes downwards onto the table top it is an inclined plane/ramp.\n\nAttaching a couple of parts using screws and a couple more using nails/tacks gives you your screw and wedge.\n\nSimple. Next time don't procrastinate.
925475
I thinkl Autodesk Autocad will be the best one. You can download a trial at \n\nhttp://www.autodesk.com/
861018
An easy solution would be to use Playdough! (or other claylike materials).  It's easy to form into various shapes and stick together into a model.  And it is colorful without needing any extra painting.  You can easily add labels on toothpicks or a color key to describe the different parts.
152361
The site below has animated objects. I hope this helps!
40356
A model elevator.\n\nNo one really knows how they work and they always take it for granted.\n\nHe can use a cardboard box or half gallon milk carton, pencil, scissors, tape,  plastic straws, string and play-doh. Look up elevator in the World Book encyclopedia and build two models.\n\nOne should have the elevator (a small tic tac box) balanced by string over a straw with a play-doh weight.\n\nThe other can be a hydraulic elevator. Use play doh to attach the tic tac box (with a toy person inside) to a straw. punch a hole in the bottomn of thge milk carton (front and back cut out) now push the straw up and down to make the elevator rise and fall.