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Lesson Posted on 02/09/2020 Tuition/BSc Tuition Schools/CBSE Schools CBSE/Class 11/Science/Biology/Unit 3: Cell Structure and Function

An Overview of Cell

Priyanka Pawar

I have completed MSC in biotech,PG diploma in clinical research. I am an experienced, qualified tutor...

Cell biology is a branch of biology which deals with the study of cells. Cells are building blocks of living organisms and fundamental unit. Organisms are made up of different types of cells, and cells give structure to the organism. So they are known as a structural unit, cells play biological mechanisms... read more

Cell biology is a branch of biology which deals with the study of cells.

Cells are building blocks of living organisms and fundamental unit.

Organisms are made up of different types of cells, and cells give structure to the organism. So they are known as a structural unit, cells play biological mechanisms for organisms, so they are known as biological units, and cells play different functions to carry out a life of organisms, so they are known as a functional unit.

Cell theory states that cells are building blocks of organisms, and every cell come from the pre-existing cell.

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Lesson Posted on 07/08/2020 CBSE/Class 10/English Schools/CBSE Schools

Basic English

Deepika

The 5 special Sounds The 6 long Vowel Sounds The 7 Digraphs Sounds 1 oi oil,toy 1 a made, maid, day 1 ch chip,each, much,future 2 ow cow, pouch 2 e feet, bean, me, eat, 2 sh fish,dish,ship,shop 3 oo book, pull 3 i cry,pie,like,might,type 3 th thing,think,both, thought 4 aw raw,... read more
    The 5 special Sounds     The 6 long Vowel Sounds     The 7 Digraphs Sounds
1 oi oil,toy 1 a made, maid, day 1 ch chip,each, much,future
2 ow cow, pouch 2 e feet, bean, me, eat,  2 sh fish,dish,ship,shop
3 oo book, pull 3 i cry,pie,like,might,type 3 th

thing,think,both,

thought

4 aw raw, haul 4 o go, snow, boat, home, 4 th the, than, this, them, they
5 zh vision,treasure 5 u feud, music, cube, recuse 5 wh what, when, white, whale
      6 oo few, blue,soup 6 ng king, wing, sing, ring
            7 nk bunk
                 
                 
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Lesson Posted on 04/08/2020 CBSE CBSE/Class 12 Schools/CBSE Schools +2 CBSE/Class 12/Mathematics/Matrices CBSE/Class 12/Mathematics/Relations and Functions less

Relations and Functions: Class 12

Shikha Yadav

I have very good hold in Mathematics. Won several certificates and Olympiads in the past. Computer Science...

Relation: A relation, R, from a non-empty set A to another non-empty set B, is mathematically defined as an arbitrary subset of the cartesian product of A and B. Domain, Range and Co-domain of the Relation Types of relations: Empty relation Universal relation: Identity relation Reflexive... read more

Relation:  A relation, R, from a non-empty set A to another non-empty set B, is mathematically defined as an arbitrary subset of the cartesian product of A and B. 

Domain, Range and Co-domain of the Relation 

Types of relations: 

  1. Empty relation   
  2. Universal relation: 
  3. Identity relation 
  4. Reflexive relation
  5. Symmetric relation 
  6. Transitive relation
  7. Equivalence relation
  8.  Inverse relation

Types of Intervals:

  • open interval 
  • second closed interval  
  • open closed interval
  • closed open interval

Function: Function is a relation for which each value from set the first component of the ordered pair is associated with exactly one value from the set of second components of the ordered pair.

Important functions

  • identity function
  • modulus function or absolute value functions
  • greatest integer function or integral function or step function
  • smallest integer function
  • Signum function
  • exponential functions
  • logarithmic function

 type of functions

  • One-One function Or injective function Or injection fashion
  • Onto function or subjective functions or surjection function
  • One-one onto function or bijective function Or bijection functions
  • identity function
  • Equal function
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Lesson Posted on 24/07/2020 Schools/CBSE Schools

Rational numbers

Vidyaprabha K

I am a postgraduate with B.Ed in Maths.I have 16 years teaching experience. I worked in Bhutan, Tirupur...

You have seen different types.of numbers in the earlier classes Eg Natural numbers, whole numbers, integers etc When you want to divide a.pizza into 8 equal parts, each person get 1/8 of it. So we need numbers in fractional form. A number that can be written in the form of p/q where p and q are... read more

You have seen different types.of numbers in the earlier classes 

Eg Natural numbers, whole numbers, integers etc 

When you want to divide a.pizza into 8 equal parts, each person get 1/8 of it. So we need numbers in fractional form.

A number that can be written in the form of p/q where p and q are integers and q shoul.not be equal to zero .( since division with zero is not defined yet)

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Lesson Posted on 24/06/2020 CBSE/Class 10/English CBSE Schools/CBSE Schools +1 Life Skills Coaching/Soft Skills Training/Personality Development Training less

Never Cease to Learn!

Meghana

Hi there! I've completed B.E and Executive MBA. I've earned a Business English Certificate (BEC) too,...

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young. - Henry Ford Learning is beautiful, especially when done with the intent of gaining long-lasting knowledge and wisdom, to be able to... read more
Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. 
The greatest thing in life is to keep your mind young.  - Henry Ford
    
 
Learning is beautiful, especially when done with the intent of gaining long-lasting knowledge and wisdom, to be able to put into productive use for self and the society, to succeed in the examination of life, and not merely to get through the academic examinations.
 
Learning is a continuous process that keeps happening, both consciously and subconsciously.
Learning helps us evolve as a person, to help others and the society at large, to look at things from other people's perspectives, appreciate diversity, and to not fall behind others in this highly competitive world.
 
Here are some tips to enhance your overall learning curve:
 
Technology:
Technological advancements have enabled us to interact with subject experts around the globe. Access to a wide range of enriching resources is just a few clicks away. Search for any topic you wish to gather information on, and you have it all. Several visually powerful tools can have an everlasting learning impact on our minds. They were never heard of, some years back. Reap the benefits of technology to the fullest.
 
Time:
Manage your time wisely and effectively. No excuses can be made in the name of time constraint. We certainly have time, or can surely take some time out for things we really want. Planning and prioritization of work in hand will help achieve this. So, identify what should be concluded first and what can be done later.
 
Mentor: 
Find the right mentor who may either be a parent/ sibling/ relative/ friend/ teacher or any other trustable person. Half the battle is won when you find one! Someone with whom you can have healthy debates, who can be your critic, from whom you can learn and grow, a well-wisher, and with whom you can have conversations just about any topic under the sun.
 
Self-learning: 
It is best to not just rely entirely on external teaching; this tends to limit your learning. Self-learn to broaden your learning horizon, identify your strengths, work on your flaws, and push your limits constantly.
 
Knowledge sharing: 
Sharing knowledge is one of the powerful ways of self-development, as you tend to first teach yourself in order to teach others. This, in turn, makes you confident, helps you stay motivated, expands your contacts/connections, you become a sought-after person for problem-solving, you may even become a role model to many.
 
Say NO to comparison:
Develop an awareness of not comparing yourself with others. Some may seem well ahead in the race, while others may seem to have fallen behind. But in reality, we are all working on our own, unique time clocks. Don't get caught up in the comparison game. Each of us is born with varying strengths and setbacks. Count what you have and know your self-worth. It is critical to stay away from negativity around.
 
Passion:
Initiate and amplify your liking for all the subjects; this is going to take you miles ahead! Don't have an aversion to any subject, for you never know when the knowledge you possess in that subject would come in handy in life. 
 
Get a break:
Amidst all the hustle-and-bustle, don't forget to unwind at regular intervals. Alter your learning routine to prevent boredom from creeping in, get some physical activity, get a good night's sleep, and don't forget to enjoy life too!
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Lesson Posted on 16/06/2020 Exam Coaching/NEET-UG Coaching Exam Coaching/Engineering Entrance Coaching/IIT JEE Coaching Schools/CBSE Schools +1 CBSE/Class 11/Science/Chemistry/Chemical Bonding and Molecular Structure less

Chemical bonding

Er. Satya Narayan Yadav

I am an experience,qualified teacher ,7 year experience in teaching math physics and chemistry,mostely...

Question 1: What is the difference Between CO2 and SiO2, hybridization both? Answer 1: co2 is the gas, while sio2 is the glass Due to c atomic number 6, an electronic configuration is 1s2, 2s2 2p2 In carbon atom not have d-orbital, and it has 2-sigma Bond and 2-π Bond. So its hybridization is... read more

Question 1: What is the difference Between CO2 and SiO2, hybridization both? 

Answer 1: co2 is the gas, while sio2 is the glass 

Due to c atomic number 6, an electronic configuration is 1s2, 2s2 2p2 

In carbon atom not have d-orbital, and it has 2-sigma Bond and 2-π Bond. So its hybridization is SP, % of s character is 50%, and %of p character 50%. in CO2, have two π-bond, due to π-bond weak Bond. So carbon dioxide is gas and Sio2 is glass because si z= 14  electronic configuration is 1s2, 2s² 2p6, 3s², 3p², 3rd shell have present d- orbital, so it has ( SiO2 ) 4-sigma Bond, sigma Bond is the strong Bond compare π-bond, Co2 is the gas and SiO2 is the glass. Hybridization is sp3.

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Lesson Posted on 12/06/2020 Schools/CBSE Schools

Looping in C

Shailendra Kumar

I have 10 years teaching experience.in various organization

Looping in C “The process of repeatedly executing a block of statements is known as looping”. In looping, a sequence of statements is executed until some conditions for termination of the loop are satisfied. Generally, a program loop consists of two segments: (i)control statement (ii)... read more

Looping in C

The process of repeatedly executing a block of statements is known as looping”.

In looping, a sequence of statements is executed until some conditions for termination of the loop are satisfied. Generally, a program loop consists of two segments: (i)control statement  (ii) Body of the loop.

(i) Control statement tests specified conditions and then directs the repeated execution of the statements contained in the body of the loop.

(ii) Body of the loop is a statement-block, which may consist of one statement or more statements.

The loop may be categories in the following two types depending on the position of the control statements:-

(ii)Exit-controlled Loop: In case of an exit-controlled loop, the control checks the test-condition after executing the body of the loop. Do-while() loop come under this.

(I) Entry controlled Loop: In case of an entry-controlled loop, the control checks the test-condition before entering into the body of the loop. While () and for() loop come under this category.

Now, we are going to discuss, types of loop statements provided by C Language. There are three types:

(a) While() Loop

(b) do-while() Loop

(c) For () Loop 

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Lesson Posted on 29/04/2020 Schools/CBSE Schools CBSE/Class 10/Science/Unit III: Natural Phenomenon/Light- Reflection and Refraction

light reflection introductory part

Suman Jha

I am a teacher having 4+ years of experience in teaching Science and mathematics from 6 to 10 CBSE students...

Light- It is a form of energy which produces the sensation of sight. Properties of light It is an electromagnectic wave. Light travels along a straight path that is rectilinear propogation of light. Speed of light in vacuum is 3×108 m/s A Ray of light Beam of light A ray... read more

Light- It is a form of energy which produces the sensation of sight.

Properties of light

  • It is an electromagnectic wave.
  • Light travels along a straight path that is rectilinear propogation of light.
  • Speed of light in vacuum is 3×108 m/s

 

A Ray of light Beam of light
A ray of light is apath followed by light energy in a transparent medium A group of parallel rays of light emitted by the source of light.

light rays

Three types of beam of light

REFLECTION OF LIGHT

The process of returning back or bouncing back the light to the same medium after striking a surface is called reflection of light.

 

laws of reflection

1. Incident angle (θi) is equal to the reflected angle (θr).

               θi=θr

2. Incident ray, Reflected ray and normal to the reflecting surface at the point of incidence lie in the same plane.

  • Reflection of silver is highest that is approximately 95%
  • reflection of coal is approx. 4%

TYPES OF REFLECTION

 

REGULAR REFLECTION DIFFUESD REFLECTION
when a parallel beam of light falls on a smooth and highly polished surface. when a parallel beam of light falls on a rough surface. 
the reflected beam is parallel  the reflected light is not parallel
reflected light is directed in a fixed direction reflected light spread over wide area 
e.g. search lights , polished shoes ,automobile headlights etc. e.g. light reflected by wooden table ,newspaper etc.

 

 

 

 

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Lesson Posted on 15/04/2020 Tuition/B Ed Tuition Tuition/BSc Tuition Schools/CBSE Schools +3 CBSE/Class 10 Tuition/B Ed Tuition/Basics in Education Schools/IGCSE Schools less

Overcoming Mental health Strategies in Quarantine -- Parents vs Children

Chetna S.

I can teach science topics very easily and make it stronger for the students. I have strong command...

As Corona is spreading in the almost entire world, the situation of parents/ families is very critical as such cases keep them worrying about their children and other family members. For Parents, this is the most crucial phase as they have to take care of their children’s health with proper... read more

As Corona is spreading in the almost entire world, the situation of parents/ families is very critical as such cases keep them worrying about their children and other family members. 

 For Parents, this is the most crucial phase as they have to take care of their children’s health with proper psychological understanding. Understanding children’s problems, their worries and keep them relax is the most tedious task for parents in this pandemic. The most important task for parents to make their children comfortable and less anxious. Stress also makes children worry and anxious. Parents should talk to their children regularly about their feelings and their worries in this outbreak. 

They keep on trying and ask questions to their children about their views and their several doubts about the current situation. Whenever you see, a negative emotion developing in your child, try to incorporate and practise mental health exercises which help to deal you with negative and uncomfortable feelings. 

Try to incorporate more conversations about mental health and its related issues which keeps your children more relax and unwind. Talk openly with children about what they feel, their likes and dislikes, and what they want to prefer in this outbreak time. Talking makes children comfortable will relieve your worries as well as theirs too.

Encourage their expression through creative activities and build their memorandum, which keeps them motivated. In small children, there is a constant feeling of being alone and sadness, try to make them calm and relax with stories and playful activities. 

Engage your kids in educational activities like workbooks, Educational games. Participate in family routines and planning strategies to enhance health promotion behaviours. For children limit media exposure, talking about what they have seen/heard and address stigma, prejudice and potential injustices occurring during an outbreak. 

Parenting is difficult in general, but during such a crisis, it is tough to deal with their behavioural issues. 

I wish all the parents, try to understand and incorporate healthy mental discussions and problems with your children. 

Keep calm and manage this crisis with happy parenting.

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Lesson Posted on 01/04/2020 Schools/CBSE Schools CBSE/Class 10/Mathematics/UNIT VII: Statistics and probability

Probability Class 10

Sayali Kirpekar

I can teach every topic very easily and make it stronger for the students.

This lesson is so easy for class 10 Maharashtra and CBSE board. Students can easily score good marks. For example:Let's take an example.When a coin is tossed, what is the probability that no heads turn outSolution. We know that if a coin is tossed, then there is the possibility of head or tail.Sample... read more

This lesson is so easy for class 10 Maharashtra and CBSE board. Students can easily score good marks. For example:
Let's take an example.
When a coin is tossed, what is the probability that no heads turn out
Solution. We know that if a coin is tossed, then there is the possibility of head or tail.
Sample space will be 2
But answer =no of no heads/total no of sample space
=1/2
You have to just know no dice, or for playing cards, we have to just know how many Kings, queens and so on. You can get out of our marks.

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