Distribute 7 balls to 7 children who are standing in a circle. Then count the balls and click on the number to tell how many
A. Combine and split groups of 6 identical objects and determine totals
B. Split a group of 6 identical objects into two groups in different ways
C. Combine and split groups of 7 identical objects and determine totals
D. Split a group of 7 identical objects into two groups in different ways
F. Distribute and count 6 identical objects aligned in two rows
G. Distribute and count 5 or 6 identical objects aligned in a column