Eating breakfast using a three-tined fork. Kei (3yo): Fork janai. Threek da yo! (This is no fork. It's a threek!)

寝ぼけた人が 出てきたらどうしよう？ お風呂に入れて ピカピカにしちゃおう だけどちょっとだけどちょっと 僕だって怖いな

Kei (3yo): 20 + 19 + 18 + 17 + 16 + 15 + 14 + 13 + 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 equals? Equals? Me: Umm... 210. Kei: 210 + 210 equals? Me: 420. Kei: 420 is a square! Is he thinking that two triangles make a square? Nice try, Kei.

I've been posting a lot about Kei (3yo)'s progress learning math, but specifically in the past two days he's said two things that really took me by surprise: "6 times 14 equals 84." And: "10 to the power of 0 equals 1."

Kei (3yo): 80 is big number. 8 is small number. Me: Alright, Kei. Kei: Negative 1 million is big number or small number? Me: Umm, I would say that it has a big magnitude, but it's less than zero. Kei: Negative 1 million is chū-kurai (medium).

Kei (3yo): Kawaii, kawaii, kawaii (cute, cute, cute)! Me: Kei, who's cute? Kei: It's Kei!

Kei (3yo): 49 plus how many is 64? Me: Umm, 15. Kei: Fifteen! 64 plus how many is 81? Me: 17. Kei: 81 plus 19 is... one huuunnndred!

Kei (3yo): なんで進化する？ Me: Um, good question. I think things evolve in nature so they can survive better. Kei: Yes.

Me: Kei, are you sad? Kei (3yo): Not sad. Angry! Angry is faster than sad!

Joshua Wu and I made an app (Doknya: Read Any Language) for intermediate language learners. It’s a mobile web browser with a Reader mode that provides help with the language you’re studying.

This game we made, Fruitarian, seems to be Kei (4yo)'s favorite these days. Lately he chooses it over any other game I've tried with him. pcksgames.com/fruitarian/ It's rather simple, but a good way to practice moving a cursor and counting.

4yo: My name is not Kei. Me: What's your name? 4yo: My name is One Billion Triangles.

Kei (4yo): One billion minus how many is a square?

Me: Do you prefer doggies or kitty cats? Kei (4yo): Kitty cats. I don't like to eat doggies.

Kei (4yo), playing 2048: I don't like to play it. Me: Well, you don't have to play it. Kei: I have to!

Kei, 4yo, receiving his Sports Day medal: Yay! I'm the winner! I'm the winner! You lose.