gf set the sliders: speed, r, space and next numer see also number square - dancing dots - https://scratch.mit.edu/projects/123878393/
Music LaPaloma Thanks to Samueldora: https://scratch.mit.edu/projects/896335/ Thanks to Goch: https://scratch.mit.edu/projects/129910879/ A triangular number or triangle number counts the objects that can form an equilateral triangle, as in the diagram on the right. The nth triangular number is the number of dots composing a triangle with n dots on a side, and is equal to the sum of the n natural numbers from 1 to n. The triangular numbers are therefore 1, 1+2, 1+2+3, 1+2+3+4, ..., Triangular number, is: 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66, 78, 91, 105, 120, 136, 153, 171, 190, 210, 231, 253, 276, 300, 325, 351, 378, 406 …
