Somewhere between the third bedtime reading of a battered picture book and the moment your six-year-old announces that the wolf was probably just hungry, the old tales begin to change shape. That is not a problem to correct. It is an invitation, and modern retellings give you a way to answer it without losing the stories your family already loves.

Why the Old Tales Still Hold Their Ground

Fairy tales have survived because they are short, strange and unusually well built. They lean on repetition, on clear stakes — the forest, the oven, the locked door — and on a small hero who wins through wit rather than size. Children recognise the pattern long before they can explain it, which is why a four-year-old will correct you if you skip a step.

The versions most families know are already retellings. The Brothers Grimm collected and reshaped tales told by earlier storytellers; Charles Perrault gave several of them a courtly French polish; Joseph Jacobs gathered English favourites such as "Jack and the Beanstalk" and "The Three Little Pigs"; Hans Christian Andersen wrote his own from scratch. Each of them edited, softened or sharpened the material for the audience in front of them, and writers today are doing exactly the same thing. That continuity is worth pointing out to children: these stories are not museum pieces, they are something people keep making.

What a Modern Retelling Usually Changes

A good retelling moves one or two levers and leaves the frame standing. The levers are usually these:

• Point of view. The wolf, the stepsister or the giant's wife takes the microphone, and suddenly the villain has reasons.
• Setting. The same plot unfolds on a Caribbean island, in a snowy northern village or in a tower block with a broken lift.
• Tone. Some are comic, some rhyme, some are quietly melancholy. A funny version and a sad version of one tale can sit happily side by side.
• Format. Wordless picture books, comic strips and short chapter books all offer new ways in.
• Ending. Villains are forgiven, bargains are renegotiated, or the heroine simply goes home.

The bones usually stay: the journey, the test, the rule that must not be broken, the third attempt that works. That is precisely what makes comparison possible.

How to Read Them Side by Side

You do not need a lesson plan. You need two books and a little patience.

• Start with the plainest traditional version you can find, a bare-bones collection rather than an elaborate picture book, so the skeleton is clear.
• Read it aloud once, then let it rest for a day or two. Children need the familiar shape before they can enjoy it being bent.
• Bring in the retelling at the same time of day, in the same chair. Familiar ritual makes unfamiliar angles easier to take.
• Keep both copies out during the same week and let your child flip between them.
• Read the opening line of each back to back. First lines reveal a retelling's intentions faster than anything else.
• Do not announce the comparison. Read both, then ask what they noticed.

Questions That Get Children Talking

• Whose story is this telling? Whose voice is missing?
• What does the wolf want in this version? Did the other book agree?
• Is anyone being punished for something that was not their fault?
• Would you have made the same choice at the crossroads?
• Which ending feels fairer? Which feels truer?
• What would happen if the story carried on for one more page?

Open questions beat clever ones. "Who did you feel sorry for?" tends to unlock more than "what is the moral?", and it works just as well with a nine-year-old as with a five-year-old.

Choosing Retellings With a Bit of Care

• Look at how the villain is drawn. Avoid versions that map wickedness onto a real culture, region or religion; children absorb that quietly and carry it a long way.
• Read it yourself first when you can. Ten minutes saves an awkward bedtime.
• Match the length to your child's attention, not to their reading age. A long retelling of a short tale can feel like a punishment.
• Notice what the ending teaches. If cleverness is rewarded and cruelty is named, you are on solid ground.
• Let your child's reaction be the judge. If a version frightens them, that is information rather than failure.

Making It a Family Habit

You do not need a shelf of forty books. One tale at a time is plenty: read the traditional version, read one retelling, talk about it, then move on. A tale a month gives you a dozen comparisons in a year, which is more than most adults manage in a lifetime.

Libraries and charity shops are excellent hunting grounds, and older collections often contain the plainest, least decorated versions, which are ideal starting points. Keep a basket by the sofa rather than a tidy shelf, so the books are within reach on a wet afternoon.

Best of all, encourage your children to retell the tale themselves — in their own words, with their own ending, perhaps with the wolf as the narrator. That is the oldest form of retelling there is, and it is the one they will remember. When a child says, "but in my version she doesn't need rescuing," the conversation has already begun.