Which technique involves using repeated addition to teach multiplication?

The technique that involves using repeated addition to teach multiplication is commonly referred to as counting by numbers. This method helps students understand that multiplication is essentially the addition of a number to itself multiple times. For instance, when students learn that ( 4 \times 3 ) can be interpreted as ( 4 + 4 + 4 ), they start to grasp the foundational concept of how multiplication operates as repeated addition.

Counting by sets or groups makes this idea more tangible. Students can physically group objects or numbers in sets, reinforcing the concept that multiplication relates to the size of the groups and the number of groups. This approach is particularly effective in teaching the relationship between addition and multiplication, thus laying a solid groundwork for further mathematical concepts.

While other techniques like turnaround facts or visual groups may support learning, they do not specifically emphasize the method of using repeated addition to illustrate multiplication in the same straightforward manner as counting by numbers does.