Model airplane group 16, calligraphy group 8, art group 5, computer group 7, science and technology group 10. Just add a few more people to the model airplane team.

(1) (2) (3)16 ÷ 8 = 215 ÷ 5 = 316-15 =1(person)/ The calligraphy group has the least number of people. There are twice as many people in the model airplane group as in the art group, and three times as many people in the computer group as in the calligraphy group. The number of people in the computer group is less than that in the model airplane group 1 person, and more than that in the calligraphy group1person. So, the answer is: model airplane; Calligraphy; 2; 3; 1; 10.