Showing posts from May, 2017

Suggestions for changes in lessons of NCERT Chemistry book

Chemistry Book:

NCERT Chemistry book requires a complete reinvention, with eliminating most units that are unrequired at the higher secondary level and making it more systematic with the flow of information and building new connections by using prior information.
e.g. How quantum mechanical model is linked with explaining the properties of elements and molecules? And before explaining the quantum mechanical model, it's needed to explain what are model and theories.
From Britannica:
Scientific modeling, the generation of a physical, conceptual, or mathematical representation of a real phenomenon that is difficult to observe directly. Scientific models are used to explain and predict the behavior of real objects or systems and are used in a variety of scientific disciplines.

The Higher secondary level is meant to know the basics first with the foundational understanding of the mechanism of concepts in detail. It should be relevant to students day to day life to know their surrounding…

Experimental manipulation after tests using eSALT feedback from students

Personalized pre and post test need to be conducted in the following manner with experimental manipulation:

While giving questions, each student needs to be asked for how easy or difficult the questions are.

Student Feedback for Questions Ease (eSALT):
1) Easy (E)
2) Safe (S)
3) Average (A)
4) Low (L)
5) Trouble (T)

Teachers curation
1) Students making mistakes with Questions tagged Easy, Safe, Average comes under misconceptions which need to be dealt with.
2) Concepts of questions that are tagged with Low and Trouble (it doesn't matter whether student solved it correctly or not) should be explained again to the student. If a student has solved correctly even after tagging it as Low or Trouble than the student need be asked for the cause of trouble along with solving the trouble.

Explaining and clearing doubts can be done in groups in the class as well as in individual level. Grouping can be done based on the overall type of feedback you get from all students.

Spaced Practice
All questio…

NCERT books nothing more than short notes with giving too shallow knowledge

Comparative analysis of Openstax chemistry book and our NCERT chemistry book read by largest populated country

Review of chapter Atoms, Molecules and Ions of Openstax and Structure of Atom in NCERT

Openstax starts the chapter with a picture mass spectral analysis. Mass spectrometry is a very important technique to study atomic properties. To make you more curious it talks about the diagnosis of diseases through analysis of molecules in an exhaled breath.

But ncert book image is this:


Let's come down to the introduction:

NCERT Chemistry:
The existence of atoms has been proposed since the time of early Indian and Greek philosophers (400 B.C.) who were of the view that atoms are the fundamental building blocks of matter. According to them, the continued subdivisions of matter would ultimately yield atoms which would not be further divisible. The word ‘atom’ has been derived from the Greek word ‘a-tomio’ which means ‘uncut-able’ or ‘non-divisible’. These earlier ideas were mere …
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