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Doubtbox is the latest innovative product from the founders of eTutor, which is used by half a million students across the globe. This Interactive Digital Content Repository has 8000 animated topics and one lakh questions with answers for Classes 1-12 . Doubtbox pen drive, an excellent tuition master at home, facilitating self learning by students, available for Classes 1-12, based on CBSE syllabus, with effective blending of ICSE and State Boards syllabus. Once they are set up in the home computer/lap top, students can study any lesson according to their convenience and do home work easily, watching the lessons enriched with multimedia. All the topics are explained with quality animations, graphics, pictures and diagrams along with audio explanations. Students will enjoy lessons as if seeing an animated, topic-based film.
Doubtbox Features:
Latest syllabus
Animated video lessons
Exciting visuals
Audio explanations
Multiple choice questions
Assessments
Time bound test
Model test papers
Previous years question papers
NCERT solutions
System Requirements:
Processor – Minimum:1 GHZ, RAM – Minimum:2 GB
Disk Space – Minimum 10 GB Free space
Screen resolution – 1280 x 720 or above
Operating System – Windows 7 or above
Topics Covered in doubtbox Educational Pen Drive
SCIENCE
Chapter 1. Where does it come from?
Food Variety, Food Materials and Sources, Plant Parts and Animal Products as Food, Plant parts as food, What do Animals Eat?
Chapter 2. Components of Food
What Do Different Food Items Contain?,What do Various Nutrients do for our Body?, Balanced Diet, Deficiency Diseases, Fibre, Spinning Cotton Yarn, Yarn to Fabric, History of Clothing Material
Chapter 4. Sorting Materials into Groups
Objects Around us, Properties of Materials, Solubility
Chapter 5. Separation of Substances
Methods of Separation-Hand Picking/ Winnowing/Sieving,Threshing, Sedimentation, Decantation and Filtration, Evaporation Use of more than one method of separation, Can water dissolve any amount of a substance?
Chapter 6. Changes Around Us
Can All Changes Always Be Reversed?, Could There be Other Ways to Bring a Change?
Chapter 7. Getting to Know Plants
Herbs, Shrubs and Trees, Stem, Leaf, Root, Flower
Chapter 8. Body Movements
Human Body and its Movements- Ball and socket joints, Pivotal Joint, Hinge joints, Fixed joints,Gait of Animals- Earthworm, Snail, Cockroach, Birds, Fish, How do snakes move?
Chapter 9.The Living Organisms and their Surroundings
Habitat and Adaptation, A Journey Through Different Habitats, Characteristics of the Living Beings
Chapter 10. Motion and Measurement of Distances
Story of Transport, Some measurements, Standard units of measurements, Correct measurement of length, Measuring the Length of a Curved Line, Moving Things Around us, Types of Motion
Chapter 11. Light , Shadows and Reflections
Transparent, Opaque and Translucent objects, What exactly are Shadows?, A Pinhole Camera, Mirrors and Reflections
Chapter 12. Electricity and Circuits
Electric Cell, A Bulb connected to an electric cell, An Electric Circuit, Electric Switch, Electric conductors and insulators
Chapter 13. Fun With Magnets
How Magnets Were Discovered, Magnetic and Non-magnetic materials, Poles of Magnet, Finding Directions, Make your own Magnet, Attraction and Repulsion between Magnets
Chapter 14. Water
How much water do we use?, Where do we get water from?, Water cycle, Back to the oceans, What if it Rains heavily?, What happens if it does not rain for a long period?, How can we save Water?, Rainwater Harvesting
Chapter 15. Air Around Us
Is Air present everywhere around us?, What is Air made up of ?, How does oxygen become available to animals and plants living in water and soil?, How is the Oxygen in the Atmosphere Replaced?
Chapter 16. Garbage In Garbage out
Dealing with garbage, Vermicomposting, Recycling of paper, Plastics – boon or a curse?
MATHEMATICS
Chapter 1. Knowing Our Numbers
Introduction, Comparing Numbers, Large Numbers in Practice, Using Brackets, Roman Numerals
Chapter 2. Whole Numbers
Introduction, Whole Numbers, The Number Line, Properties of Whole Numbers, Patterns in Whole Numbers
Chapter 3. Playing with Numbers
Introduction, Factors and Multiples, Prime and Composite Numbers, Tests for Divisibility of Numbers, Common Factors and Common Multiples
Chapter 4. Basic Geometrical Ideas
Introduction, A Line Segment, A Line, Intersecting Lines, Parallel Lines, Ray, Curves, Polygons, Angles,
Triangles, Quadrilaterals, Circles
Chapter 5. Understanding Elementary Shapes
Introduction, Measuring Line Segments, Angles – ‘Right’ and ‘Straight’, Angles – ‘Acute’, ‘Obtuse’ and ‘Reflex’, Measuring Angles, Perpendicular Lines, Classification of Triangles, Quadrilaterals, Polygons, Three Dimensional Shapes
Chapter 6. Integers
Introduction, Integers, Additon of Integers, Subtraction of Integers with the help of a Number Line
Chapter 7. Fractions
Introduction, A Fraction, Fraction on the Number Line,Proper Fractions, Improper and Mixed Fractions, Equivalent Fractions, Simplest Form of a Fraction, Like Fractions, Comparing Fractions, Addition and Subtraction of Fractions
Chapter 8. Decimals
Introduction, Tenths, Hundredths, Comparing Decimals, Using Decimals, Addition of Numbers with Decimals, Subtraction of Decimals
Chapter 9. Data Handling
Introduction, Recording Data, Organisation of Data, Pictograph, Interpretation of a Pictograph, Drawing a Pictograph, A Bar Graph
Chapter 10. Mensuration
Introduction, Perimeter, Area
Chapter 11. Algebra
Introduction, Matchstick Patterns, The Idea of a Variable, Use of Variables in Common Rules, Expressions with Variables, Using Expressions Practically, What is an Equation?
Chapter 12. Ratio and Proportion
Introduction, Ratio, Proportion, Unitary Method
Chapter 13.Symmetry
Introduction, Making Symmetric Figures : Ink-blot Devils, Figures with Two Lines of Symmetry, Figures with Multiple (more than two) Lines of Symmetry, Reflection and Symmetry
Chapter 14. Practical Geometry
Introduction, The Circle, A Line Segment, Perpendiculars, Angles
ENGLISH GRAMMAR
Chapter 1. Articles
Articles, Definite Article, Indefinite Article, Rules Using ‘the’
Chapter 2. Nouns
Nouns, Singular and plural nouns
Chapter 3. Pronouns
Pronouns, More on Pronouns, Personal Pronouns, Demonstrative Pronouns, Possessive Pronouns, Reflexive Pronouns, Indefinite Pronouns
Chapter 4. Verbs
Verbs, Kinds of verbs, Transitive verbs, Intransitive verbs
Chapter 5. Present Tense
Introduction, Present tenses, Present tense aspects, Simple present tense, Present Continuous, Present perfect tense
Chapter 6. Past Tense
Past tense aspects, Past perfect, Simple past and present perfect tense
Chapter 7. Future Tense
Futurity in English, Future tense aspects, More on future tense, Using will and shall
Chapter 8. Adjectives
Definition, Types of Adjectives, As Attributive and Predicative, Degrees, Adjectives Table 1,Adjectives Table 2,Adjectives Table 3, Comparative form with To, Comparative into Positive, Superlative into Positive, Adjectives from Noun and verb, Conversation 1, Conversation 2, Special Adjectives, Examples
Chapter 9. Adverbs
Introduction, Kinds of adverbs, Examples
Chapter 10. Subject, Predicate and Object
Introduction, Subject, Predicate and Object, What is an object?, Examples of objects, Examples of predicates, Examples of subject
Chapter 11.Prepositions
Introduction, Objects of preposition 1, Objects of preposition 2, Prepositions with adjectives, Prepositions with forms of transport, Place and direction, Place and time, Examples
Chapter 12. Conjunctions
Conjunctions, Although, As, Because, Despite, In spite of, But, Neither-nor, So, Unless, While, Yet
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