秀逸すぎるアルゴリズムの教え方

こんにちは、Choimirai Schoolのサンミンです。

0  はじめに

お父さんと子供たちで「Peanut Butter and Jelly (PB&J) Sandwich」を作る様子を録画した動画。

これは、子供たちにプログラミングを教える上でも大変効果的な方法✨。面白いし、結果を見てどんな改善が必要なのか考えるのでアルゴリズムの基礎が学べる。pic.twitter.com/JoCJcINg9u

— Sangmin @ChoimiraiSchool (@gijigae) July 6, 2021

息子と娘さんが書いた指示書に従ってサンドイッチを作るお父さん。自分たちが思った通りではなく、書いた通りに動いているお父さんに気付き、指示書を改善しつつもまだまだ足りない箇所が多い。

▲Peanut Butter and Jelly (PB&J) Sandwich

動画のスクリプトを文字起こししましたのでどんなステップで進めているのかもう一度チェックしてみてください。

1  動画のスクリプト

00:00 Dad

Step One, get two pieces of bread out. Got them! Get a butter knife and get some PB*. Take one piece of bread. Spread it around with the butter knife.

※PB: Peanut Butter の略

00:10 Son

No dad with your peanut butter.

00:12 Dad

I'm just doing what it says. It says take one piece of bread. Spread it around with the with the butter knife.

00:23 Son

Hold on.

00:23 Dad

Get some jelly. Rub it on the other half of the bread.

00:29 Son

No dad, open the jelly.

00:31 Dad

It doesn't say to do that. Put the breads together on top of each other. Take a big bite. This doesn't taste like a peanut butter and jelly sandwich.

00:46 Daughter

Sorry, I had to, I had to make it extremely specific.

00:50 Dad

Oh good. I'm starving. Take two pieces of white bread out of the bag. take the lid off the jar of peanut butter. Get a butter knife and stick it inside of the peanut butter jar. With the knife scoop a bit of peanut butter out.

01:07 Daughter

A bit, that means like a lot.

01:09 Dad

A bit means a lot?

01:10 Daughter

In my world...

01:13 Dad

There we go.

01:13 Daughter

You're doing better than before though.

01:15 Dad

Open the jelly jar. Squeeze it onto the other piece of bread.

01:20 Daughter

No~

01:22 Dad

Done, closer.

01:27 Dad

Alright, get some peanut butter. Take the peanut butter knife. Open the peanut butter with a knife in the PB. Get some jelly open the jelly.

01:35 Son

No.

01:36 Dad

Squirt the jelly onto the bread.

01:39 Son

You're supposed to ...

01:40 Dad

Take the butter knife with the peanut butter on it. Wipe it all over the piece of bread that's blank. Take the butter knife. Rub the jelly all over the piece of bread.

01:53 Daughter

Oh you're doing better.

01:57 Dad

It says all over. Put the two pieces on top of each other.

02:07 Son

This isn't how I meant.

02:09 Dad

Take two pieces of white bread out of the bag. Take the lid off the jar of peanut butter. Get a butter knife and stick it inside of the peanut butter jar.

2  まとめ

子供たちは結果を見てどんな改善が必要なのか考えるので、アルゴリズムの基礎が楽しく学べると思います。