Those gruesome stories are taught as face value stories just as what the adults learn in their Theocratic Ministry School.
And that's exactly how they will go about inculcating a yougster's mind during Family Worship™ night.
Don't be mistaken - connecting the dots will have a lasting effect on young minds, and hell, not for the better!
Here is what the instructions book has to say:
"Another suggestion is to try to visualize what you read, making mental pictures as an aid to memory. In imagination see the actors and the background, hear the sounds and voices, smell the odors, taste the food and drink, share the happiness or grief of a situation. Try to put yourself in the scene being described. Every sense can be brought into play imaginatively to reproduce vividly the Bible account. Passages of Bible history can be more easily committed to mind in this way." sg study 4 p. 23 par. 15 How to Read and Remember