05:03

Mathematics

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642,877 views

06:01

Mathematics

Can you solve the seven planets riddle?

1,300,906 views

04:08

Mathematics

How to make a hexaflexagon

8,105,232 views

04:23

Mathematics

The coin flip conundrum

419,751 views

04:28

Literature & Language

How many verb tenses are there in English?

348,948 views

05:26

Mathematics

Can you solve the dark coin riddle?

1,440,645 views

05:10

Thinking & Learning

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1,324,388 views

05:08

Psychology

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2,753,577 views

04:47

Mathematics

Can you solve the egg drop riddle?

2,142,478 views

05:41

Teaching & Education

Should we get rid of standardized testing?

458,476 views

04:01

Mathematics

Can you find the next number in this sequence?

436,230 views

04:10

Thinking & Learning

How to spot a misleading graph

717,319 views

04:50

Thinking & Learning

Can you solve the fish riddle?

2,957,308 views

05:07

Mathematics

Check your intuition: The birthday problem

1,141,913 views

05:24

Thinking & Learning

Can you solve the pirate riddle?

3,343,847 views

04:47

Psychology

How do focus groups work?

288,756 views

05:13

Thinking & Learning

Can you solve the virus riddle?

3,816,033 views

05:11

Psychology

Where do superstitions come from?

988,126 views

05:03

Psychology

How To Be Confident

1,888,060 views

04:54

Thinking & Learning

Can you solve the three gods riddle?

6,244,539 views

03:08

Health

Does chocolate really lower your blood pressure?

21,928 views

04:52

Science & Technology

Mary's Room: A philosophical thought experiment

1,617,614 views

04:56

Psychology

Would you sacrifice one person to save five?

1,554,421 views

04:35

Mathematics

Can you solve the counterfeit coin riddle?

3,925,331 views