Mathematics - Multiplication - Introduction to multiplication as repeated addition - Arrays Builder

Two sliders: 'Rows' (1-10) and 'Columns' (1-10). As the student adjusts, a grid of dots appears showing the array. Below it shows three representations: '3 rows of 4 = 3 × 4 = 12', and also '4 + 4 + 4 = 12' (repeated addition). The student sees the CONNECTION between the array, the multiplication, a