These are links to great sites that give you more information about the principles behind Pathfinders’ Science Kits!
Grey Company Trebuchet Page – Well, if you haven’t already found everything you wanted to know about the trebuchet, then this is THE site. It has it all, including more links than a ten fathom anchor chain! Some of the links to mathematical sites and simulators don’t work, I’ll try to get to them and load the links here when I can.
Medieval Centre Experimental Museum – An all encompassing site that highlights the activities around all things medieval, including neat pictures of Trebuchets, Catapults and other Medieval Siege engines. They build full size models, and have a recreated town. Well worth the visit if you are in Denmark, but if you can’t make it try clicking on this!
Non Gunpowder Artillery – This site has some excellent background material about early weaponry, with clear drawings and information. It has some educational links as well.
Nova – Medieval Siege – A great site from PBS in the United States, with some fun and interesting activities about the Trebuchet and life in the middle ages in a castle. You can even try your hand at shooting a trebuchet and destroying a castle!
Levers – How a Bathroom Scale Works – Another How Stuff Works site, it shows the inner mechanisms of a bathroom scale. Great if you are studying levers, in fact it would be a lot of fun to make one of these on your own! Go ahead, take apart the bathroom scale for parts!
Levers – Raise an Obelisk – This PBS site has a shockwave activity where you can raise an Egyptian obelisk using a lever. It has the formula for the mechanical advantage of the lever. Very good for students who want some practical experience with a lever and need to practice using a formula. Good for ages 9 and up.
Bridges – Building Big – This is the best bridge site I have found on the net! There are activities to test the strength of different materials, and how they apply in real situations. The Forces Lab is an excellent illustration of the factors that engineers need to take into account when they design a bridge. The Bridge Challenge is one of the best interactive bridge problem solving activities you can get! If you miss this site then your students have not seen it all!
Automatons – Cam Shafts – A great link through How Stuff Works that show 3-D animations of how camshafts work in a variety of situations. If you can’t picture how a follower works this is the site for you!
Inventors Exploring Leonardo – This rich site looks at the life of Leonardo da Vinci, and has an interesting activity in the inventor’s workshop section. A well done educational site about this radical thinker and artist. Worth a visit!
Siege Engine – Wikipedia – This is a GREAT place to start getting information on most any topic. It is a community-driven online encyclopedia, that can be updated and edited by anyone.