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![]() ![]() Plan and carry out fair tests in which variables are controlled and failure points are considered to identify aspects of a model or prototype that can be improved. Testing a solution involves investigating how well it performs under a range of likely conditions.Īlignment agreement: Thanks for your feedback! At whatever stage, communicating with peers about proposed solutions is an important part of the design process, and shared ideas can lead to improved designs.Įngineers improve existing technologies or develop new ones to increase their benefits, to decrease known risks, and to meet societal demands. Research on a problem should be carried out before beginning to design a solution. Generate and compare multiple solutions to a problem based on how well they meet the criteria and constraints of the design problem. Generate and compare multiple possible solutions to a problem based on how well each is likely to meet the criteria and constraints of the problem. People's needs and wants change over time, as do their demands for new and improved technologies. Different proposals for solutions can be compared on the basis of how well each one meets the specified criteria for success or how well each takes the constraints into account. The success of a designed solution is determined by considering the desired features of a solution (criteria). Possible solutions to a problem are limited by available materials and resources (constraints). This activity focuses on the following Three Dimensional Learning aspects of NGSS:ĭefine a simple design problem that can be solved through the development of an object, tool, process, or system and includes several criteria for success and constraints on materials, time, or cost.Īlignment agreement: Thanks for your feedback! The fence in the background is what I try to launch the squirrels over.Define a simple design problem reflecting a need or a want that includes specified criteria for success and constraints on materials, time, or cost.Ĭlick to view other curriculum aligned to this Performance Expectation You can see the trigger (string) that goes towards the house. The best part about this is that one of my neighbors is one of those animal rights people, and the look on his face was priceless when he asked me what "that thing out in the yard was" ![]() So far this year I have launched a total of 16 squirrels, but only 2 or 3 have made it over the fence into the neighbor's yard. ( not the safety of the squirrels, the safety of my father when he's stumbling around the yard ) The launch pad is covered with cracked corn, which squirrels seem to love. The string goes into the house through a window, so whenever I walk through the kitchen and I see a squirrel on the launch pad (the bricks) I can just pull the string from inside the house and he gets to go for a little ride The supports that hold the front of the slingshot are just lengths of rebar with tennis balls on top for safety. The trigger is a gate latch which has a string tied to it. The slingshot bands are made from 3/8" surgical tubing (about ten feet in length). It's a really simple contraption, and it also works quite well. This contraption hasn't killed a squirrel yet, and most of the squirrels come back for more.Īlright, this is the squirrel launcher that I mentioned in the "I are a redneck" thread. I don't want to hear all of that nonsense about hurting squirrels, after all they are just rats with bushy tails. ![]() First off, If you don't like the idea of launching squirrels across the yard, you should just click the back button right now. ![]()
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