Asking Testable Questions Enabling students to design and carry out experimental inquiries is an important aspect of learning about scientific processes.
The first step in this process is the generation of an experimental or testable question.Testable questions are ones which can be answered through experimental inquiry and observation of the natural world. Questions which require an opinion, or could be answered differently by different people, are also not testable questions. It is important to note that not all scientific questions can be answered through experimental inquiries. For example, many discoveries in astronomy, such as the irregularities of the orbits of Uranus and Neptune, only came about through careful observation.A testable question is a question that can be answered using scientific methods such as:Field StudyFirst and foremost, testable questions require defining of the variables of the experimental inquiry. This means they include what will be varied (changed) and what the impact that changing the variable is expected to have. Testable questions are about changing one variable to see what the effect is on another variable.For more about variables, see:Testable questions often begin with question starters such as How What If.? Does and have a style such as:If we change fill in the blank_______ how does it affect fill in the blank_______?What happens to fill in the blank_____ if we change fill in the blank_____?How does changing fill in the blank______ affect fill in the blank______?How does fill in the blank______ affect fill in the blank________?You may already use SMART goals in the classroom, but the concept of SMART can also be used when developing testable questions for experimentation in the classroom.The more specific the question, the easier it will be to design and implement a scientific inquiry. For example, does soil affect germination? could be made more specific by changing the question to does the temperature of soil affect the number of seeds that germinate? = MeasurableWhen developing testable questions, students should be thinking about what measurements they will need to make and what data they will need to collect. Keeping this in mind can help oakley tightrope students refine and clarify their questions. For example, in oaklry the more specific question above, students would be measuring the temperature of soil (using a thermometer) and collecting data about the germination (keeping track of when the seeds sprout).When brainstorming testable questions, students could be thinking this experiment be done with the time and materials we have? If not, what would be needed? Is it practical to do in the classroom?Ideally, testable questions will lead to answers that are of value to the students and will further their understanding of science concepts. Encouraging students to come up with their own testable questions can motivate students to find answers.Similar to the A for Attainable, oakley black sunglasses students could be thinking we have enough time to do this experiment? For example, if the investigation is about how the amount of water affects the size of tomatoes on their tomato plants, this will take months to complete and may in fact go beyond the end oakley prescription eyewear of the school year.
How does Tomatosphere model the asking of a testable question?In the Seed Investigation, the inquiry question is provided to the students:How does exposure to the space environment or space like conditions affect the number of tomato seeds that germinate?Is this a testable question? Yes!The question is specific (is clear what is being changed).The testable question of the Seed Investigation is about changing the type of seeds (seeds which have been in space or have been treated to a environment vs. non treated seeds).
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