IELTS Grammar: mistakes with 'alike'

Several people wrote sentences below yesterday's lesson, but some of them contained mistakes. Can you correct the sentences below?

1. The two teachers had alike ideas about using technology in education.
2. My three children had received an academic reward alike at the end of the term.
3. The profits gained from the selling of bouquets of flowers are given for the sellers and the poor alike.
4. CCTV footage confirm your safety, prevent losing of precious items from footpath,shopping mall and alike.