Inclusion Criteria:  All children with the following criteria will be in rolled in the study  Age range from (5-10 years). Severity of ataxia will be from 15-30 by SARA scale. Children after 2 months of medulloblastoma resection. They can stand and walk with minimal support. They have good cognition, compliance, and ability to understand and instructions. Children receiving radiotherapy and chemotherapy sessions They are medically stable  Exclusion Criteria:  Children will be excluded from the study if they have  Any neuromuscular disorder. Visual impairment. Cognitive problem Convulsion. Peripheral neuropathy due to chemotherapy.