Call me “Donald” if you think that “Golden Thumb” doesn’t sounds like a name of human being. Yes it’s the same “Donald” in “Donald Trump”. You might not believe it but it is true: both Donalds visited Jerusalem on the same day, May 22, 2017. Trump Visits Israel: Donald Trump Becomes First Sitting President to Visit Jerusalem’s Old City. I also ate a lot of McDonald, possibly because it swallowed my name. :-D

Marius, Lucas, Lambert, Ethan, Andy, Peter, Grace, Elaine, Angie and Hal, ranging from grade 3 to grade 7, live in different places of the world. They are all my “close”, in the sense of “connected over internet”, friends, and enjoy building fun things on mac with their math and logic skills. They even push their code onto GibHub regularly like professionals.

If they can do it so can you. You DO NOT have to know anything about coding. The focus is on problem solving, reasoning, math skill, etc. instead of programming language itself. I am going to help you set up everything, not much actually, so you can start tackling math problems like “how to centre a grid inside the larger rectangle”, “how to convert screen coordinates (123.0, 234.0) to logical coordinates (3, 5) of chess board” or “what features I want to add into my apps”.

Let me show you some examples first.

Ethan made his first app without writing a single line of code. If all you have is a hammer, everything looks like a nail. Ethan had only “rectangle”.

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