Designing Experiments

This educational video uses a bowling analogy to explain the engineering design process, specifically focusing on how to test solutions through trials. The host, Sabrina, breaks down complex concepts like variables, constants, criteria, and outcomes into manageable parts by demonstrating how an engineer would approach the problem of getting a strike at a bowling alley. The video explores key scientific inquiry themes including the importance of isolating variables to ensure fair testing, defining success criteria before testing begins, and the necessity of keeping other factors constant. It demonstrates the iterative nature of testing, showing how engineers perform multiple trials, analyze the results against their established criteria, and adjust their approach based on data. For educators, this resource provides a clear, visual model for teaching the experimental method and engineering design. It is particularly useful for introducing students to the vocabulary of experimentation (isolate, constant, trial) and showing why changing only one variable at a time is crucial for scientific validity. The bowling metaphor makes abstract procedural steps concrete and relatable for elementary and middle school students.

This video explores the engineering design process, specifically focusing on how engineers identify and resolve "failure points" to create safe and effective solutions. Hosted by Sabrina Cruz, the episode uses engaging animations and real-world examples to explain that failure isn't a negative outcome in engineering, but a necessary step in testing limits. It breaks down how engineers create plans, build models, and conduct trials by isolating variables to find exactly where a design stops working. Key themes include the definition of a "failure point," the importance of strategic planning over random guessing, and the scientific method's role in engineering through isolating variables. The video illustrates these concepts through a relatable example of testing a model bridge's weight capacity and a historical reference to the Tacoma Narrows Bridge collapse. It emphasizes iteration—using failure data to redesign and improve the solution. For educators, this resource is an excellent tool to introduce the "Test and Improve" phase of the engineering cycle. It helps destigmatize failure, framing it as critical data collection. Teachers can use the bridge testing demonstration to launch hands-on STEM challenges where students must intentionally test their designs to the breaking point to understand their limits. It also bridges science and engineering by showing how controlled experiments (trials) are used to validate design choices.

In this engaging episode of Crash Course Kids, host Sabrina Cruz uses the analogy of a mobile video game to explain the fundamental engineering concepts of variables and outcomes. The video breaks down the scientific method of testing solutions, specifically focusing on why it is critical to isolate variables during an experiment to understand cause and effect. Through a "Catbot" slingshot game, viewers see a practical demonstration of how changing launch angle versus pull strength affects the result.

This educational video introduces students to the critical concept of variables within the engineering design process. Using the relatable framework of asking "What If" questions, the host explains how engineers identify and manipulate different factors to test the success of their solutions. The video distinguishes between variables that can be controlled (like the weight or design of a prototype) and those that cannot (like gravity or wind), providing a clear foundation for scientific testing. The content reviews the standard engineering process—from defining a problem to building a prototype—before focusing specifically on how variables influence outcomes. Through animated examples involving bouncing balls and a hang glider attempting to cross a gorge, the video demonstrates practical applications of these abstract concepts. It emphasizes that identifying variables allows engineers to predict potential failures and refine their designs before real-world implementation. For educators, this video serves as an excellent bridge between general problem-solving and specific scientific methodology. It simplifies the often-confusing topic of variables (independent, dependent, and constants) by framing them as "conditions we can change" versus "conditions we can't." This makes it highly useful for preparing students for science fair projects, STEM challenges, or any unit focusing on experimental design and the scientific method.

In this engaging episode of Crash Course Kids, host Sabrina Cruz introduces students to the engineering design process through a relatable real-world problem: she dropped her phone down a storm drain. Instead of panicking, she uses this scenario to demonstrate how engineers define problems, brainstorm solutions, and design technologies to overcome challenges. The video breaks down complex concepts like isolating variables and conducting trials into accessible, bite-sized explanations.

Join Anthony and his robot pal Squeaks to explore the fascinating engineering behind NASA's Ingenuity helicopter, the first machine designed to fly on Mars. This engaging video breaks down the science of flight, comparing how helicopters work on Earth versus the unique challenges posed by the thin Martian atmosphere. Viewers learn how scientists solved these problems using specific design features like lightweight materials and extra-long, fast-spinning blades. The video transitions from theory to practice by guiding students through a hands-on STEM activity: building their own paper helicopter models. It demonstrates the importance of scientific modeling and introduces the engineering design process, encouraging viewers to test, observe, and iterate on their designs—just like real NASA engineers. This resource is an excellent tool for introducing elementary students to concepts of aerodynamics, planetary science, and engineering. It seamlessly connects complex space exploration topics with a simple, accessible classroom craft, making it perfect for lessons on the scientific method, variables, and the perseverance required in problem-solving.