Problem:

Have students stand in a circle and count by ones from 1 to 10 in unison. Then, call on students to do this in pairs or individually. Follow the same procedure for counting by ones from 1 to 20, then to 30, to 40, to 50…and eventually to 100.

Or, give the students a starting number between 2 and 20 and have them count by ones from that number to a designated number. Repeat the process using a starting number between 11 and 20.

Have the students count in unison before asking them to count in pairs or individually.