2021-10-11 Teaching Note

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2021-10-11 Teaching Note

Use it or lose it!

Random Talk Before Class

This is the first class after the holidays. Open your cloud class app and we will do the sign-in by gesture as usual. Listen carefully and follow my numbers to draw the gesture.

Look, this is the result of this sign-in.
Let’s learn how to describe the result in English.
Who wants to give it a try?

There are thirty-nine students in our class. This time thirty-five students have signed in, and four students have not signed in. One student (Zhou Run) asked for leave. Three students are here but failed to sign in for some reasons.

Succeed – Success – Successful – Successfully

We can visit TIOBE Index to know the popularity of various programming languages.
URL (Uniform Resource Locator) of TIOBE Index: https://www.tiobe.com/tiobe-index

Now Python has become number one in the top list.

Universe = Time + Space
Time = Past (History) + Present (Miracle) + Future (Dream)
Space = Upper + Lower + Left + Right + Front + Back
3D Games: Three Dimensional Games

Question: How many students are not here this time?
We can solve the problem by doing a subtraction.
There is a change in the final result. Only one student is not here but he asked for leave. (not here + not ask for leave = absent)

Arithmetic Operations

In our daily life, arithmetic operations are very popular.

Arithmetic Operations: Addition (plus), Subtraction (minus), Multiplication (times), Division (divided by)

Task: Look up these four words in your dictionary and pay attention to three aspects - pronunciation, spelling and meaning.

Proverb: You can lead a horse to water but you can’t make it drink. (It’s totally up to you. It’s you who determine the final result. The future is completely in your own hands.)

Subtraction: 39 - 38 = 1

  • Daily English: If you subtract thirty-eight from thirty-nine, you will get one.
  • Math English: Thirty-nine minus thirty-eight equals one.

Addition: 38 + 1 = 39

  • Daily English: If you add one to thirty-eight, you will get thirty-nine.
  • Math English: Thirty-eight plus one equals thirty-nine.

Start PyCharm and write a Python program to do the addition of two integers.

Word Study

  • Law: 法律、法规、规则、定律
  • We must obey the law, otherwise we will be punished.
  • In middle school, we learned Newton’s Laws of Motion.

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