Few studies have focused on the child of a parent with cancer. Family systems and cognitive development theories suggest that the mother's illness affects the children and that families take action to help them. This study describes the ways in which school-age children cope with the mother's breast cancer and the ways in which their families help them cope. The results are based on semistructured interviews with 81 children 6-20 years old whose mothers had been diagnosed with breast cancer within the past two-and-a-half years. Interviews were tape-recorded, transcribed, and content analyzed. Eighty-four percent agreement on interrater reliability was achieved using three independent trained coders. Children and families used four types of strategies: acted as though they were in her shoes, carried on business as usual, tapped into group energy, and put her illness on the table. Parents, other family members, the children's friends, and adult friends helped the children. The results suggest ways that clinicians can understand the effect of the mother's breast cancer from the child's perspective and thus facilitate both the child's coping and the family's attempts to help the children.