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You may consider having students watch this or you should watch it yourself to help establish an understanding of orthographic projection works. Rear view of a torsion powered arrow throwing ballista in the cocked position. Rear view of a torsion powered onager loaded and ready to be winched down into the cocked position. This video gives a general overview of orthographic projections. Side view of a torsion powered mangonel catapult in the cocked position. In addition, I ask students to identify where they will place their tape and other materials this helps with material management during the construction process. The official plans for this catapult, a miniature replica of medieval siege catapults, call for several short pieces of wood, screws, nails, rubber bands, eye. The catapult has 6 factors with three possible levels each. What is potential energy Potential energy is energy that is stored and can be turned into kinetic energy, the energy of motion. I have rulers readily available for this task.
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Each group gathers a Chromebook and accesses the site. Commander Artemesia is in the midst of a viscious war with her enemies. Prior to having students complete their orthographic projections, I use Orthographic Projection (website) to demonstrate how one can create a 3D design on a piece of paper. After deliberating, they come up with their best possible solution and turn that design into an orthographic projection. Now that students have information about various catapult designs, they share their sketches from yesterday with their partner.
CATAPULT DESIGN IDEAS HOW TO
I usually assign partners, but you can decide how to handle that issue on your own. Partners will begin class by sharing their ideas with each other.