Least Common Multiple (LCM) : Drop Marbles

This is one of the easiest methods to determine LCM without using any calculations. Children enjoy learning LCM using this method. As LCM is the least common multiple, children must be well-versed in multiplication tables to find multiples of the given numbers. This activity can be carried out in the following steps :

- Take around 30 bowls, label them from 1 to 30, and arrange them in the sequence from 1 to 30.
- Take marbles of different colours and put them in the basket.
- To determine the LCM of 2, 3, and 6, first put blue marbles in the bowls with numbers as multiples of 2 like 2, 4, 6, 8, 10, 12, 14, 16, 18.
- Now put yellow marbles in the bowls with numbers as multiples of 3 like 3, 6, 9, 12, 15, 18.
- Put green marbles in the bowls with numbers as multiples of 6 like 6, 12, 18, 24.
- Pick the bowls with all three coloured marbles : 6, 12, and 18.
- LCM is the least common multiple, so LCM of 2, 3, and 6 is 6.

### Please refer this guide by Fun2Do Labs for teaching LCM to kids :