Big day: Eon's dad got him a brand-new mouse so Eon can drive the computer himself. "I think it's a good time for Eon to start learning about computer science," Dad says, and they open up Code.org. The deal for today: Eon does everything himself, and Dad only gives instructions. ("It's all me doing this. My dad's not doing anything!" Eon says proudly, showing his hands to the camera.) What follows is eleven puzzles — and the very first thing Eon has to master isn't code. It's his own hand on the mouse.

A click and a drag are not the same thing

Puzzle one is about as simple as a puzzle gets: click the block. Dad even has to point — "the block, not the apple." Eon clicks it. "Congratulations, you completed the puzzle!" "This is so easy," Eon laughs. Dad warns him: it's going to "get trickier and trickier."

It gets trickier on puzzle two, which says drag the block to the target. This is where Eon discovers that a click and a drag are two different moves. He keeps clicking when he needs to drag. "Drag. Not click. Drag," Dad repeats. Then comes a second problem — Eon presses the wrong mouse button. "No, no — the left one. Left, not right. Left." A click is one quick press. A drag is press-and-hold with the left button while you slide the mouse, then let go. Eon's hand "wobbles" the whole time, but he gets the block to the target.

Try saying it out loud: a click is a tap; a drag is hold-and-move. Real computer users do both hundreds of times a day without thinking — but everyone had a first wobbly drag, just like Eon.

You don't have to be perfect — let it snap

The puzzles change from clicking single blocks to arranging several blocks to form a picture — a flower, a tree, a house, even a little computer-and-mouse. "Is this Scratch I'm playing?" Eon asks. "No," Dad says, "it's a series of puzzles, like a Rubik's cube."

At first Eon tries to line each block up exactly, and his wobbly hand makes that miserable: "Why do I keep moving it to the side? This is the hardest puzzle ever!" Then Dad teaches the trick that changes everything: you don't have to be precise. "You just need to get the approximate position. If you see the gray area, you can snap it back." Suddenly it's easy — get a block close to the gray outline, release, and the program snaps it into place with a little sound. "Oh, now I know how to do this!" Eon says.

Dad also coaches Eon's body, not just the mouse. Standing up made Eon shaky, so Dad says, "Sit down — you get more stable. If you put your hands here, on the desk, it's more stable." Then he steers with tiny words — "a little bit to the left... right... down a little... good, snap it!" Steadying your hand is a real skill, and Dad even talks about adjusting the mouse's sensitivity to make it easier.

Glued blocks and loose blocks

The hardest puzzles add a twist Eon doesn't expect: some pieces won't move on their own. "Why can't I move it? Why is it all together?" he asks. Dad explains: "These two blocks are glued together, but this block is the loose one." The secret is where you click. Click the top of a stack and everything sticks together and moves as one; click the bottom (the last block) and you can separate the loose piece.

Dad ties it to the picture so it makes sense: a house has a top, a middle, and a bottom — "you just find the different parts" and put each where it belongs. On the very last puzzle, Eon also learns to fix a mistake: when blocks end up in the wrong order (he needs them counted one, two, three), Dad shows him the trash icon — click a block, delete it, and put it back in the right spot. "Pretty smart, huh?" Then: "Congratulations, you have completed the final puzzle!" Eleven puzzles done — and Dad clicks finish, not continue, because this time they really are done.

Try it

Find any mouse or trackpad and play the two moves on purpose. First, click something once — a quick tap with the left button. Then press and hold the left button and drag it across the screen before you let go. Feel how they're different? Next time you drag-and-drop a file or a puzzle piece, rest your hand on the desk like Dad told Eon, aim for close enough, and let it snap. That steady hand is the foundation everything else — including real coding — is built on.