This video gives a general overview of orthographic projections. 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. I have rulers readily available for this task. We review the key points from their research and then students begin to finalize their designs, which will be turned into an orthographic projection. In this activity, we will use the engineering design process to create our own miniature catapult and send things flying. They then go through the animated explanation of orthographic projections and take notes in their notebooks. Catapult Physics The Onager The onager catapult is almost identical to the trebuchet, but instead of a falling counterweight, it uses a torsion bundle to rotate the arm (similar to the mangonel, described previously). Each group gathers a Chromebook and accesses the site. 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. Build a Gauss Rifle: use magnets and ball bearings to set up a.
Bottle Rocket Blast Off: investigate how the air pressure you create in a bottle rocket before launching changes the maximum height it reaches once launched. Now that students have information about various catapult designs, they share their sketches from yesterday with their partner. A Ping Pong Catapult: experiment with the Ping Pong Catapult to find the right settings to launch a ball into a target.
#Catapult design ideas how to#
I usually assign partners, but you can decide how to handle that issue on your own. Plan and conduct an investigation to compare the effects. Partners will begin class by sharing their ideas with each other. Standards/Curriculum/Topics Covered By This Activity: Next Generation Science Standards: K-PS2-1.
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