Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

If you liked this story, share it with other people. An early start to the monsoon and unusually heavy rains have caused massive flooding in northeastern Bangladesh, leaving millions of people ...

Physics questions are the most fun when people don't immediately agree on the answer. What feels intuitive or obvious—sometimes isn’t. We can argue over the solution for hours of entertainment, and we ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Q: I have a problem with the water pressure in my bathroom. The rest of the house seems to be fine, but my bathroom is poor. What can I do? A: We had a service call from a customer who was upset with ...