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BENGALURU – The removal of critical sections on evolution and the periodic table of elements from some high school science textbooks in India has sparked concerns among education experts and ...

NCERT has courted controversy in the last couple of months over allegations of "several substantive revisions of original texts" during rationalisation of the syllabus. Experts involved in framing the ...

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 ...

To the three requirements of a modern Periodic Table, as stated by A. A. Clifford 1, must be added a fourth, namely, that it should be in as close accord as possible with chemical facts, and above all ...

A century and a half ago, a Russian chemistry professor published a classification of all the known elements, organized by atomic weight. Today, the system that he created for his students — plus some ...