Here are some current event sites. Check them out to determine which might meet your classroom needs, sign-in options, and features.
Nearpod is a useful tool for introducing or reviewing content. There are many free lessons available on the website or you can create your own. Great for computers or iPads.
You can use Quicktime on your Mac to make a screencast video for your students. Use this tool to demonstrate navigation to or through a website. Short tutorial here.
Breakout Edu is a fun tool to use to encourage collaboration and critical thinking. Click here to be a beta tester (step 2) to get access to many pre-made games.