Now you have the basis of a science project that is possible to do: Question: “Does running in the morning increase my heart rate more than running in the evening?” Independent variable ...

In science, a variable is something that can be changed, measured or controlled in an experiment. Scientists look at variables to understand how they affect things. A variable is any one of the ...

Students discuss the steps involved in the experiment, the ways in which the researchers controlled for variables and how the experiment could be modified. In the Learning Activity, students ...

How should we study biodiversity change? In an ideal world, we would study many different aspects of biodiversity and how they change over time. This would allow us to distinguish between natural ...