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One of my favorite math tricks
77,371 Aufrufe • vor 3 Jahren •via X (Twitter)
9 Kommentare

johnroycroft.ethvor 3 Jahren
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 Aniravor 3 Jahren
Is that Willow Pill's shirt?????

Samantha Yammine, PhDvor 3 Jahren
This trick is equally as iconic as the shirt and I didn't think that was possible

Ryanvor 3 Jahren
You enthusiasm and energy is really positive. Oh and this is math witchcraft! 🙂

barry goldmanvor 3 Jahren
@heysciencesam ah.. all that fibonaci stuff!

Alexander Williamsvor 3 Jahren
Love this one Howie. It's fantastic combination of mental math with a touch of algebra.

AllisonAuction&Appraisalvor 3 Jahren
Did not know the 11, kids never heard of the 9 trick. Can you do one on that so moms not crazy.

Reva Ahujavor 3 Jahren
@howie_hua - this is AWESOME

ZHONG XINAvor 3 Jahren
nice tee
