Try out this new search engine just for students. I learned about this last weekend and have only just started using it. I attended a webinar and the creator of this site was the presenter. He is working hard to assure that the site is safe for students. Try it out. I think you'll like it too. I am adding this site to the student weebly sites so they can use it directly from those locations.
In addition to the search engine, you'll also find biographies on the SweetSearch ste. Just scroll down slightly and click on the Sweet Search Biographies. Consider using this site when you have your students write biographies. There is advice on writing them included. When you go to the Sweet Search Biography site, look to the right for the Happy Birthday section. Each day they post an article about someone who was born on that day in history. Now look to the right on this blog and see the findingDulcinea widget where you will also see the birthday articles. This widget does have ads but you can click the x to close most of them. Be careful when you scroll to read the article. Right at the bottom, you will find another ad. To avoid this ad, I have to pay a subscription to the widget company OR you can just slide the bar down to see more of the article.