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One of my favorite math tricks

77,371 次观看 • 3 年前 •via X (Twitter)

9 条评论

johnroycroft.eth 的头像
johnroycroft.eth3 年前

Just started following and have shown all your tricks to my Y6 class. After 30 years of teaching, my passion for maths shortcuts is as strong as ever!

Pak Anira 的头像
Pak Anira3 年前

Is that Willow Pill's shirt?????

Samantha Yammine, PhD 的头像
Samantha Yammine, PhD3 年前

This trick is equally as iconic as the shirt and I didn't think that was possible

Ryan 的头像
Ryan3 年前

You enthusiasm and energy is really positive. Oh and this is math witchcraft! 🙂

barry goldman 的头像
barry goldman3 年前

@heysciencesam ah.. all that fibonaci stuff!

Alexander Williams 的头像
Alexander Williams3 年前

Love this one Howie. It's fantastic combination of mental math with a touch of algebra.

AllisonAuction&Appraisal 的头像
AllisonAuction&Appraisal3 年前

Did not know the 11, kids never heard of the 9 trick. Can you do one on that so moms not crazy.

Reva Ahuja 的头像
Reva Ahuja3 年前

@howie_hua - this is AWESOME

ZHONG XINA 的头像
ZHONG XINA3 年前

nice tee

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