7 and Happy Numbers - Numberphile

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Author:
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Subject:
Computing and Information, Education, Mathematics
Provider:
Maryland Public Television
Provider Set:
Mathlanding: Elementary Mathematics Pathway
Level:
Upper Primary
Grades:
Grade 3, Grade 4, Grade 5
Language:
English
Material Type:
Activity/Lab
Media Format:
Video
Maryland Public Television Abstract:

In this 1.5-minute video, mathematician Dr Ria Symonds describes a characteristic of numbers such as 7, which after repeated squaring of digits and summing of the squares, result in the number 1, the first natural number. This introduction invites an investigation to find other "happy" numbers, and to find out what happens to "sad" numbers.

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