When do you need a RECAST Activity?
RECAST activities
help when the causal structure of students' explanations doesn't fit with
the scientifically accepted ones. Usually students simplify and thus distort
the concept, so for example, reducing instances of attraction, repelling,
or symbiosis to one thing making another thing happen. However, not all misunderstandings
result from the wrong causal structure. This section helps you think about
when you need a RECAST activity and when you don't. It offers general examples
as well as examples for ecosystems and density.
