python numpy basics | 基础 python numpy 1

Tonight our class played together numpy basics and math.  We put together a numpy basics notebook:

Programming by trial and error is a great way for kids to learn not only programming but also math. — this should play a bigger and bigger role in children’s day to day learning.  玩编程也帮助学习算术。

Somehow I have a feeling that learning long division in this day and age is wrong.  在这个时代还学长除法那就不对了。

Go ahead and tinker with the code in the notebook. Nothing will break, we promise 🙂

To see a world in a grain of sand | 从沙粒看世界

Professor ShouCheng Zhang “passed away”.  He is forever with us, seeing a world in a grain of sand, holding infinity in hand.

这是所有视频里最喜欢的一个视频。 张教授深入浅出,循循善诱。尽管已经“离世”, 张教授永远和我们在一起从沙粒看世界,把永恒留在刹那时光。

We won’t quote any physics or mathematics from the video, except the title of the lecture, originally from William Blake, and dedicate them to Professor Zhang:

To see a world in a grain of sand
And a heaven in a wild flower,
Hold infinity in the palm of your hand
And eternity in an hour.


Chinese style education & empty basketball courts |中国式教育和空荡荡的蓝球场

I was in China this November to conduct surveys on education.  I had a few chances of sitting in some after school education programs and cram school classes, including XDF新东方, and was shocked by the amount of work Chinese kids have to do and was saddened by the way they are learning.

Let’s talk about the amount of work first.   I saw very few kids out and about any time of day except commuting hours.   Basketball courts are empty, even on weekends.   Where are all the kids?  They are in endless cram school 补习班 classes.

A middle school child routinely gets up before 7 am and does not go to sleep until midnight or after.   Middle school students stay in school until 8 pm, and work on additional homework from 8 pm till midnight.   Younger students are often working similar hours.

Innovation in education | 教育创新

We don’t hear about startups in education in America as we hear about them in other industries. Why? There are multiple reasons. One is the belief that superior education and profit making are conflicting.  Are they?

Superior customer service in other industries seems to lead to higher profit. People don’t have any issues with that. Then why with education?

It shouldn’t.

So why?

Do more for real intelligence | 为真人智慧加油

The word AI (artificial intelligence) is everywhere these days. Some of the best young minds are pouring into the field, and industry need is so dire that graduate schools can hardly keep PhD students until graduation.

In the craze of the artificial, real intelligence seems to have been forgotten. Here, the word “real intelligence” means intelligence from real human being.
American k-12 education continues to go downhill regardless of funding, more and more homeless people in New York City are begging in the streets (many are young and able), and millions of prime age citizens are not looking for work where many jobs are left unfilled.

小蛇 | Little snake


A snake can look like a rope.  Don’t get bitten by a snake!!!  It might be poisonous!!!!!!!

帆(fān)船(chuán) | Sailing Ship


Be careful don’t fall into the water!!!!!!

小(xiǎo)蜻(qīng)蜓 (tíng) | Dragonfly

(xiǎo)(qīng)蜓 (tíng)大(dà)(yǎn)(jīng)

If I were a dragonfly I would stay away from water because I might fall and die.

长(cháng)颈(jǐng)鹿(lù) | Giraffe