public void addStep(Step stp) {

    ContentValues values = new ContentValues();

    values.put(STEP_DESC, stp.getStepDesc());
    values.put(STEP_IMAGE, stp.getImageLink());
    values.put(STEP_PDF, stp.getPdfLink());
    values.put(STEP_ANIMATION, stp.getAnimationLink());
    values.put(STEP_EXP_ID, ExperimentDbAdapter.newExpId);

    // adding record to steps table
    long stepId;
    stepId = db.insert(DATABASE_STEPS_TABLE, null, values);

    // creating step folder
    /*String path = Environment.getExternalStorageDirectory().toString()+"/Chhote Scientists/Category_1/Experiment_1";
    File directory = new File (path+"/Step_"+String.valueOf(stepId));
    directory.mkdir();*/

  }