In this step, students are encouraged to answer questions or solve problems that they have faced in Step 1 by experiment, demonstration, reading assignments, group and class discussions of the reading assignments, and or working through examples or exercises. This step helps student to link between the context and science concepts which can be used to explain or solve the problems inherent in that context. Group discussion and presentation can encourage students to exchange their ideas. Beside this, activities should encourage students to learn by doing or by designing the experiment, observations, recording experimental data and analyzing data