How did we come up with our system of telling time? Why do we divide the day into 24 hours of 60 minutes each, and put 60 seconds in each minute? Where does the definition of a second come from? And who decides what clock shows the correct time? There’s clearly a lot of questions when it comes to time.
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Categories: All Science Teachers
Seawater makes ancient concrete stronger, so it lasts while modern structures crumble into the sea. Researchers have now discovered that elements in the volcanic substance react with sea water,... read more
Categories: All Science Teachers, Safety
This useful link provides you with a general set of lab safety rules for lab activities and teacher demonstrations that can easily be adapted to your classroom. Click here for more info. read more
Categories: All Science Teachers
Groundbreaking innovations that are making the world better, smarter and a little more fun Source: The 100 Best Inventions of 2019 | Time.com Thanks for sharing the great idea... read more
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