YouTube can be a tremendous resource for educational videos, but the content is risky to share with students, due to potentially inappropriate commentary or related videos. Luckily there is a free and easy-to-use solution with SafeShare TV. Teachers can search for videos on YouTube, and then copy and paste the video link to www.safeshare.tv to generate a safe link, which they can then freely share with students for access without going to YouTube. Here's a video of Shel Silverstein himself reading this book, The Giving Tree, embedded YouTube, and (below) copied to SafeShare for student viewing.
On Safe Share: The Actual '73 Giving Tree Movie Spoken By Shel Silverstein