Miss Lam Mathematics Page

https://youtu.be/SnbJiH_f4LI?si=58ntqRgWTzdf1ORM

Part 2

Teacher Angel Laws of integral indices 指數定律 Part 2/ 慢熱版 Slow motion version

https://youtu.be/PwvDtfDwztQ

Teacher Angel Laws of integral indices 指數定律 Part 1 / 慢熱版 Slow motion version

Postcards

Please help answer the question.

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Textbook used in the international schools in HK

International GCSE (9-1) Mathematics A Exam Practice Book International GCSE (9-1) Mathematics A Exam Practice Book

Mathematics consists of proving the most obvious thing in the least obvious way.
George Polya

https://www.facebook.com/273813022746352/posts/5112889225505350/

買個Pizza都係要識計數嘅，唔係差啲上當都唔知呀。

早幾日阿印度網友Roy就去買Pizza，本來佢想要一個9吋嘅Pizza，點知Pizza店職員就同阿Roy講9吋Pizza唔係好夠，畀兩個5吋Pizza你好唔好，仲話兩個5吋加埋即係10吋，計落多咗1吋，當送畀你喇～

不過，阿Roy用快過亞洲第一神算斷蟹嘅計數本領，一下就計到，如果佢要咗呢兩個Pizza，佢係蝕咗嘅！

唔知大家仲記唔記得圓形面積點計呢，毛毛上一分鐘啱啱睇返，家吓可以同你講吓點解阿Roy係蝕咗：

事關圓形面積係π乘上r²，即係半徑x半徑x π；

Given that阿Roy原本嗌一個9吋Pizza，而呢個Pizza嘅面積就會係63.62平方吋（4.5×4.5×3.1415926）；但係阿店員話畀兩個5吋披薩，一個5吋披薩係19.63平方吋（2.5×2.5×3.1415926），兩個都只係39.26平方吋。

阿Roy話就算畀夠3個5吋Pizza，都係唔夠一個9吋Pizza咁大，阿店員同老闆都知自己計錯數，畀夠4個5吋Pizza畀阿Roy。

好在阿Roy無將佢啲數學知識畀返晒佢Maths老師啫，臨尾阿Roy要叫人唔好唔識計數，要認真看待數學（Take Maths seriously！）。

資料來源：cretiredroy/twitter

https://youtube.com/playlist?list=PLilZ7hcR0LTvbeec8SLWohthVy4Q_RQIX

Miss Lam Form 1 Form 1 EMI class

Shopping Math
These cookies / pastries are on sale.
I want to try all.
I am going to buy 6 pieces, at least 1 piece from each kind.
What kind of combination which results the cheapest price?