We found 18 resources with the concept triangular numbers
Sums of Finite Arithmetic Series: Triangular Numbers
11th - Higher Ed
Using a slider, scholars build triangular numbers and their associated rectangles and use the geometric display to find the pattern to determine the next triangular number. They then relate that number to the area of the rectangle to...
The Mathematical Secrets of Pascal’s Triangle
5 mins 7th - 12th CCSS: Adaptable
This modern animation and discussion of the ancient secrets of Pascal's triangle manages to be topical, engaging, and mathematically deep all at the same time. A great introduction to the power of number theory across multiple math...