Dan explained that they sat at different shaped tables (eg square, hexagonal) and then added sequentially. So 4 people round a table 1+2+3+4 =10. The largest number was 300 at a hexagonal table. He didn’t seen sure what this technique was called but it was useful to help in addition.
Dan explained that they sat at different shaped tables (eg square, hexagonal) and then added sequentially. So 4 people round a table 1+2+3+4 =10. The largest number was 300 at a hexagonal table. He didn’t seen sure what this technique was called but it was useful to help in addition.