Eight students with Down syndrome, aged 11 through 13, who had been adding by counting all objects for at least a year, were taught to use the more advanced technique of adding by counting-on, in a ...

Counting-on with finger patterns was procedurally efficient enough to be used in instruction in multidigit addition problems; second graders successfully learned to use counting-on with finger ...

How can I add two-digit numbers? Adding two-digit numbers can be tricky. One way to do it is by counting on. This is easier if you count on in tens first and then count on in units. Example 40 ...