Our 11-month-old hasn't been too interested in learning to crawl. I think she got tired of failing. She pushes her self backwards but can't push herself forwards. While searching for activities that could strengthen her arms, the most promising I found was baby pullups:
When your baby can sit up, even with support, help him practice getting into a standing position. Hold onto baby's hands and gently pull baby from a seated into a standing position. You can count or say "up we go!" or something that will bring a smile to his face. He'll think it's a fun game, but he's also beefing up those baby muscles.
All other exercises seems to be geared to infants that are still trying to hold their toys, bu our daughter is beyond that. Moving her chubby self around required much more strength than waving a toy.
Are there any other activities we can do to help strengthen our daughter's arms?