Hi! I am Studyfin, your science tutor. Today, we will learn how engineers design, test, and improve their ideas!
Engineers use scientific practices to solve real-world problems. They do not just guess; they plan and conduct simple investigations to see if their ideas actually work.
First, engineers design a prototype, which is a simple model of their idea. Then, they test it to find any weak spots or problems.
Next comes iteration, which means repeating the design process. Engineers look at their test results, make changes, and test the design again to make it even better.
✏️ Worked example
Imagine you want to design a paper airplane that can fly at least 15 feet. Walk through how you would use engineering practices to solve this problem.
Define the goal: You need to make a paper airplane fly 15 feet or more.
Plan and conduct a simple investigation: Fold a basic paper airplane design using a standard piece of paper.
Test your prototype: Throw the airplane five times in a hallway and measure the distance of each flight.
Analyze the results: If the average flight is only 10 feet, look at how the plane flies. Is the nose too heavy? Does it turn to the side?
Iterate and improve: Change the folds to make the wings wider, then test this new design to see if the distance increases.
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