In an inquiry oriented class in which a class VII teacher is introducing the concepts of physical and chemical change, which of the following steps would precede the rest?
1
Teacher defines and explains the meaning of physical and chemical change
2
Teacher explains and give examples of various reversible and irreversible changes
3
Teacher exposes the students to various physical and chemical changes and asks them to reflect on the similarities and differences
4
Teacher writes a chemical equation and asks students to identify the reactants and products