For the guest who asked if this was 'turning into a bloody Johnlock fic'. Not at all. In fact, it's not one fic. Its several little oneshots. Some will have different pairings, just like the Mystrade chapter, but it doesn't mean this set of oneshots is now Mystrade. Each separate one shot should be treated separately, so in light of your question, No. 'Just A Kid' is not a set of Johnlock children oneshots. But yes, the chapter in which you reviewed, Playdate, was in fact hinting at Johnlock.
But not every oneshot is or will be.

I ask you all again to please regard each oneshot as its own story, they are not linked. Thank you!

Enjoy!

13. Curiosity (nicolive)

Note: I've no idea what it's like in other countries, but here in England we do dissect things in science. Only small things like flowers, frogs and eyeballs, but it does mean by the first year of secondary school we are given a scalpel to dissect with. Just for anyone who thought it weird that I'd given the kids scalpels! Haha I apologise for the short length!

Sherlock aged 12

Molly aged 12-13

"Sherlock! Stop it! Miss Layton only said the legs!" Molly cried peering through her fingers as Sherlock hacked a line down the frog's round little belly with his scalpel. His smile was one of both satisfaction and interest as he dissected the small amphibian. Molly's eyes held shock as the dark haired boy cut it up with such ease. She wasn't averse to dead animals, quite the opposite. She found them intriguing, each one had a different reason to be dead and she found their stories interesting.

"Calm down, Molly." Sherlock spoke from his position bent over the table to peer closer at the frog's innards. "I'm only experimenting, it's harmless. I wouldn't expect your fragile mind to cope with worrying over it. So don't." He continued, never looking up or standing straight. His eyes pierced the frog corpse and Molly scowled at the back of his head.

"Sherlock Holmes! Molly was right, I said legs only young man!" Miss Layton called over from her desk, peering over her glasses like an owl.

Sherlock simply rolled his eyes and stood back from the frog, passing the scalpel to Molly wordlessly, before stalking out of the room.

"Where do you think you're-?"

"Toilets! Care to join?" He threw a smirk and a sneer back at the shrieking Miss Layton, before swinging the classroom door open with a push of both hands, leaving a stunned Biology class behind him.

Molly Hooper tucked away her sandwich, half-eaten, when she saw Sherlock Holmes striding across the field towards a wooded area where all students were disallowed to enter. Her first instinct was to shout out a warning that he'd get detention, but instead, she stood up and quietly followed him.

By the time she reached where he'd stopped he was crouched by a bush, a scalpel in his hand (that he'd no doubt stolen from the Science Department) and was carefully dissecting what looked like a dead bird.

"I didn't kill it if that's what you think." He spoke without turning to acknowledge her. Molly fiddled with her hands, watching him.

"No I-…I didn't think that…" She trailed off. "Erm…Sherlock, I came to ask you…of a, err, a favour…i-if that's ok…?" She cleared her throat while waiting for an answer from the boy.

"Go ahead. Although I can't promise I'll do it."

"Y-yes, okay…um, I was wondering if you could…that is if you didn't mind, if you could err, show me…teach me about the dead animals?" She struggled.

Sherlock paused for a second, put his scalpel down beside the dead bird and slowly stood, turning to face the mousey-brown haired girl. She swallowed. His sea-green eyes were searching her face, flicking about like they always did when he was 'working you out'. She made sure to try to keep as much to herself as possible. The last thing she wanted was the boy to know every last detail about her personal life.

Of course, unbeknownst to her, he already did.

"Yes." Sherlock answered after a while. "I'll teach you."

Molly couldn't help the small smile that formed on her lips, "Thank you, Sherlock!"

"Hmm." Was all he replied before turning and crouching back down to the bird. "With me then."

Molly quickly crouched beside him and watched his every move, ears pinned to his every word.