# Mathematics - Class III Resources

The following list of online resources are provided as a sample of curated resources. New resources shall be added as we come across interesting and relevant online materials.

#### 1. Numbers to 4-Digits Money Place Value Pattern Base-Ten System to Thousands

Description: The link highlights the introduction on numbers to 4-digits, money, place value patterns and base-ten system to thousands.

Core Concepts: Using base- ten blocks  to compare the place value.

Description: Talks about the history of Base-Ten Blocks.

Core Concepts: Base-ten Blocks.

Description: The link highlights the introduction on numbers to 4-digits, money, place value patterns and base-ten system to thousands.

Core Concepts: Recognise representation for 4-digit numbers with Base-Ten blocks.

Description: The live worksheet helps to practice representing 4-digit numbers in different ways.

Core Concepts: Able to complete the worksheet on time.

Description: To recognise the place value in 4-digit numbers.  Comparing and ordering 4-digit numbers using base- ten blocks.

Core Concepts: This video link is to show how to compare and order 4 digit numbers using base ten blocks.

#### 2. Fractions till Tenths

Description: History of fractions.

Core Concepts: A fraction  represents a part of a whole.

Description: Understanding on fractions how the fractions can expressed symbolically (numerator and denominator).

Core Concepts: Fractions are expressed symbolically.

Description: The live worksheet highlights to relate fractions names to fraction symbols and to differentiate numerators from denominators.

Core Concepts: Able to complete a worksheet.

#### 3. Decimal Tenths

Description: The link highlights the introduction on Decimals.A decimal is a fraction written in a special form.

Core Concepts: Forms of decimals.

Description: The video link shows how tenths are represented as fractions and decimal tenths.

Core Concepts: How to model decimals using base ten blocks.

Description: The live worksheet helps to relate pictorial representation of tenths to tenth fractions and decimal tenths.

Core Concepts: Complete work on fraction and decimal tenths.

#### 4. Add 3-Digit Whole Numbers

Core Concepts: Explanation and example in addition.

Description: The link contains the video on how to add three-digit numbers by regrouping.

Core Concepts: How to add 3 digit whole numbers using place value chart and base ten blocks.

Description: The live worksheet helps to practice addition of 3-digit numbers without regrouping.

Core Concepts: Able to apply what they have learned during the lesson using place value charts  without regrouping.

#### 5. Subtract 3-Digit Whole Numbers

Description: The link highlights the introduction on Subtraction with examples.

Core Concepts: Concept of subtraction using counters.

Description: The video link shows how to subtract using base-ten blocks and place value charts without regrouping.

Core Concepts: Able to solve simple word problems on subtraction of 3-digit whole numbers without regrouping.

Description: The video link shows how to subtract using base-ten blocks and place value charts with regrouping.

Core Concepts: How to subtract  3 digit whole numbers using a place value chart and base ten blocks.

Description: The live worksheet helps to practice subtracting 3-digit numbers with regrouping.

Core Concepts: Worksheet on 3-digit subtraction with regrouping.

#### 6. Add and Subtract 3-digit Numbers Mentally

Description: The link explains that mental math is a group of skills that allow people to do math “in their head” without using pencil and paper or a calculator.

Core Concepts: Mental math is useful in school and in everyday life.

Description: The link explains  the importance of mental math. Mental math helps us function in our daily lives in situations such as: Shopping, Cooking, Calculating and Building something.

Core Concepts: Benefits of mental math in our daily life.

Description: The link highlights the relationship between Addition and Subtraction.  Addition and subtraction are the inverse operations of each other.

Core Concepts: The relationship between addition and subtraction fact.

Description: The video enhances the conceptual understanding of Place value and left to right addition with 2 digit numbers.

Core Concepts: Left to Right Addition with 2 digit numbers.

Description: The video enhances with an alternate way to subtract (left to right) with 2 digit numbers.

Core Concepts: Left to Right Subtraction with 2 digit numbers.

#### 7. Multiplication – Meaning, Multiplication Properties, Multiplication as Repeated Addition, Multiplication Table Patter

Description: The link highlights the introduction on Multiplication.

Core Concepts: Introduction on Multiplication.

Core Concepts: Meaning on multiplication.

Description: The link explains the use and Importance of Multiplication in everyday life.

Core Concepts: Concept on multiplication.

Description: The video link contains the various multiplication strategies like equal groups, repeated addition, number line and array.

Core Concepts: Multiplication Strategies: Equal Groups, Repeated Addition, Number Line, and Array.

Description: The online worksheet helps to practice writing multiplication facts correctly.

Core Concepts: Multiplication sentence and array.

Description: The online worksheet helps to practice writing multiplication facts correctly.

Core Concepts: Multiplication facts.

#### 8. Multiplying 2-Digit by 1-Digit Numbers

Description: A brief introduction on Multiplication.

Core Concepts: Concept on Multiplication.

Description: The link explains the Importance of Multiplication of 2-digit numbers.

Core Concepts: Explanation on Utility and scope on Algorithms.

Description: The link highlights the importance of  Algorithms.

Core Concepts: Algorithms.

Description: The link contains the video on how to multiply a 2-digit number by a single digit number, using an algorithm without regrouping.

Core Concepts: Multiplying  without regrouping.

Description: The link contains the video on how to multiply a 2-digit number by a single digit number, using an algorithm with regrouping.

Core Concepts: Multiplying with regrouping using base ten blocks.

#### 9.Division Meaning

Description: The link highlights the meaning of Division.

Core Concepts: Concept on Division.

Description: The link contains the video on division as equal sharing.

Core Concepts: Division by sharing using counters.

Description: The link contains the video on division as equal grouping.

Core Concepts: Division by grouping using counters.

Description: The link contains the video on division as repeated subtraction.

Core Concepts: Division as repeated subtraction.

Description: The video link helps to learn division through story.

Core Concepts: Story word problems help students to get a clear concept on division.

#### 10. Multiplication and Division Open Sentences

Description: The link focuses on  practical approaches to developing mental maths strategies for Multiplication and Division.

Core Concepts: Concept on Multiplication and Division.

Description: A brief introduction on multiplication and division.

Core Concepts: Variables in Open Sentence.

Description: The link explains the importance of learning multiplication and division from a young age.

Core Concepts: The importance of learning basic multiplication and division from a young age.

Description: The video link is about multiplication and division of fact families.

Core Concepts: Multiplication and division fact families.

Description: The live worksheet helps to practice finding the missing factor.

Core Concepts: Fact-families on Multiplication and Division.

#### 11. Multiplication as Repeated Addition

Description: A brief introduction on multiplication as repeated addition.

Core Concepts: Multiplication as Repeated Addition.

#### 12. Multiplication  Table  Pattern

Description: A brief introduction on multiplication table pattern.

Core Concepts: Multiplication Table.

#### 13. Open Sentences

Description: The link contains the practical approaches to developing mental maths strategies for multiplication and division.

Core Concepts: Information on open sentences.

#### 14. Angles

Description: The link highlights the introduction on Angle.

Core Concepts: Angles in geometry.

Description: The link explains the types and definition of angles.

Core Concepts: Names of different angles.

#### 15. Length: Relationship among Different Units

Description: The link highlights the introduction on Length.

Core Concepts: Measuring using different units.

Description: The video link shows how to calculate area and perimeter using non-standard units.

Core Concepts: Area and perimeter.

Description: The link contains video to get a clear concept of the units of measurement.

Core Concepts: Distance.

Description: The live worksheet helps to practice the use of the  four units of measurements.

Core Concepts: Distance.

#### 16. Capacity: Measuring Capacity in Litre and Measuring Capacity in Millilitre

Description: The video link helps to understand the millilitre.

Core Concepts: Measuring capacity using litre and millilitre units.

Description: The online link helps to practice conversion of units using the live worksheet.

Core Concepts: How to convert from one unit to another unit.

Description: The live worksheet helps to practice the use of the  units of measurements.

Core Concepts: Capacity.

#### 17. Mass: Measuring Mass in Kilogram and Measuring Mass in Gram

Description: This video contains demonstration of measuring area using square centimeter.

Core Concepts: Mass.

Description: This video contains demonstration of measuring area using square centimeter.

Core Concepts: History on Mass.

Description: This video contains demonstration of measuring area using square centimeter.

Core Concepts: Mass.

Description: The online worksheet helps to perform the tasks related to conversion of units.

Core Concepts: Converting units.

Description: The video link highlights grams and kilograms.

Core Concepts: Grams and kilograms.

Description: The live worksheet shows how to convert kg to g and vice-versa and to combine kg and g.

Core Concepts: Converting unit of mass.

#### 18. Area

Description: A brief history on Area.

Core Concepts: Concept on Area.

Description: The video link shows how to measure area using non-standard units.

Core Concepts: Measuring area using non-standard units.

Description: This video contains demonstration of reading time on analog and digitals clocks and converting hours to minutes.

Core Concepts: Counting Areas using unit squares.

#### 19. Measuring Time: Reading Time on Analog and Digital clocks & Relation among Different Units of Time

Description: A brief history of telling time.

Core Concepts: Time (Clock).

Description: This video link shows reading time in different ways and converting hours to minutes.

Core Concepts: Reading Time in two different ways.

#### 20. Polygons Squares & Rectangles Parallelograms

Description: A brief history on Polygons. A polygon is a closed two-dimensional figure made up of straight line segments.

Core Concepts: Polygons.

Description: The link highlights the features of polygons.

Core Concepts: Elements of polygons.

Description: Play a game to identify different polygons by using the given link.

Core Concepts: Identifying polygons from the given shapes.

Description: The link highlights regular and irregular polygons.

Core Concepts: Difference between regular and irregular polygons.

Description: The link helps to identify and answer the questions on polygons.

Core Concepts: Identifying parallelograms.

#### 21. Prisms & Pyramids

Description: A brief introduction on Prisms and pyramids.

Core Concepts: Cones, pyramids, and spheres.

Description: The video link is about prisms and pyramids.  How to differentiate between prisms and pyramids.

Core Concepts: 3-D shapes.

#### 22. Combining two or more Shapes Similar and Congruent Shapes

Description: The video link shows how shapes are combined to form other shapes.

Core Concepts: Combining Shapes.

Description: The video link highlights the difference between similar and congruent figures.

Core Concepts: Similar and congruent figures.

#### 23. Turns, Slides and Flip of 2-D Shapes

Description: A brief introduction on Transformation.

Core Concepts: Introduction on Transformation.

Description: The video link is about flips, turns and slides.  Let students do a similar activity after watching the video.

Core Concepts: Details on flips, turns and slide.

Description: The worksheet checks the understanding of transformation.

Core Concepts: Transformation.

#### 24. Data Collection

Description: This document gives required information on data collection and management.  When we collect and analyze data, we're integrating several mathematical skills to answer questions and solve real-world problems.

Core Concepts: History on Data Collection.

Description: The video link helps in collecting and organising data.  Data is the collection of numbers gathered to give information.

Core Concepts: Collecting and organising data.

#### 25. Pictograph and Bar Graph

Description: A brief history of graph theory and some more details. A graph can be defined as a pictorial representation or a diagram that represents data or values in an organized manner.

Core Concepts: History of Graph.

Description: The video link shows how to create and interpret pictographs. It is a way to represent data using images and an image in the pictograph represents a certain number of things.

Core Concepts: How to create pictographs.

Description: The video link shows how to construct a bar graph with its label on the lines.

Core Concepts: Bar Graph.

#### 26. Probability Language Conducting Probability Experiments

Description: The link highlights probability and its importance.

Core Concepts: Probability.

Description: The video highlights the learning of probability.

Core Concepts: Probability .

Description: The online game to have further practice with probability.

Core Concepts: Probability Game.

Description: This link further explains on some simple experimental probability concepts.

Core Concepts: Experiments on Probability.

#### 27. Pictograph | Maths for Kids | Grade 4 | Periwinkle

Description: This video shows how to create and interpret a pictograph.

Core Concepts: III-E2 pictograph.