When Gauss's teacher asked the class to find the sum of the numbers from 1 to 100, he quickly realized a relationship and discovered a formula that made finding the answer easy. Share this video with young mathematicians after posing the problem in class.

Concepts

addition to 100, commutative property of addition

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Additional Tags

math

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Instructional Ideas

• Ask your class to find the sum of the numbers from 1 to 100 prior to showing the video
• Allow students to share their techniques, or make it a race to see who can find the correct answer first

Pros

• The video shows a clear explanation of how to find the correct answer most efficiently

Cons

• None