When a team of archeologists recently came across some 15,000-year-old human remains, they made an interesting discovery: the teeth of those ancient humans were riddled with holes. So what causes cavities, and how can we avoid them? Mel Rosenberg takes us inside our teeth to find out. Lesson by Mel Rosenberg, animation by Andrew Foerster.
Click on the link to access the full lesson:
https://ed.ted.com/lessons/what-causes-cavities-mel-rosenberg#watch
On sunny days, citizens of ancient Rome could be found exchanging news and gossip while attending to more urgent business at the public latrines. Today, most cultures consider trips to the restroom to be a more private occasion. But even when going alone, our shared sewage infrastructure is one of the most pivotal inventions in human history. Francis de los Reyes shares the history of the toilet.
Simon link is a 3rd grader at Amana Academy. He likes chocolate, candy, and learning about the history of other cultures. He loves to run and play during recess. Simon believes students should have longer recess and times to be active throughout the day. This idea connects with the Expeditionary Learning Design principle Empathy and Caring, and Responsibility for Learning.
Simon believes students should have longer recess and times to be active throughout the day.
Katherine Reilly 