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Interactive video lesson plan for: Two burning ropes - Brain Teaser

Activity overview:

Two burning ropes are needed to measure 45 minutes exactly. Each rope takes exactly one hour to burn, but they don't burn at a constant rate. Each rope is made of a different material and burns differently from the other. How do we measure 45 minutes exactly by burning both ropes. Check out my other brain teasers if you enjoy this.

Two burning ropes - Brain Teaser
https://www.youtube.com/watch?v=IyGV5Ry9pQw

Bisecting Yin and Yang - Brain Teaser
https://www.youtube.com/watch?v=HtnPUjAjn3E

Counterfeit coins - Brain Teaser
https://www.youtube.com/watch?v=d6eF98_4lHU

Cross the river - Brain Teaser
(COMING SOON!)

Facebook: http://facebook.com/MathMeeting
YouTube Channel: http://YouTube.com/MathMeeting

Tagged under: Brain Teaser,Two burning ropes,puzzle,math meeting,heaven hell,yin yang,crossing river,riddle

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