# Mathematics - Class IV 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. Introducing 5-Digit Numbers

Description: This video link introduces the 5-digit numbers.

Core Concepts: IV-A1 place value.

Link: Video on math Antics - place value

#### 2. Compare and Order 5-Digit Numbers

Description: This video link shows how to compare and order 5-digit numbers.

Core Concepts: IV-A2 compare and order whole numbers to 5-digits.

Link: Video on comparing multi digit number

#### 3. Introducing Fractions and Mixed Numbers

Core Concepts: IV-A3 modelling mixed numbers.

Link: Video on fractions and mixed numbers

#### 4. Introducing Equivalent Fractions

Core Concepts: IV-A4 renaming numbers.

#### 5. Patterns in Equivalent Fractions

Core Concepts: IV-A4 renaming numbers.

#### 6. Comparing Fractions with the Same Denominators

Description: This link shows how to compare fractions with same denominator.

Core Concepts: IV-A5 compare & order fractions.

#### 7. Comparing Fractions with the Same Numerators

Description: This link shows how to compare fractions with same numerator.

Core Concepts: IV-A5 compare & order fractions.

#### 8. Modelling and Recording Hundredths

Description: This video shows modelling and recording hundredths.

Core Concepts: V-A6 model and record hundredths.

Link: Video on introduction to hundredths

Description: This link contains a video on how to add decimal hundredths.

Core Concepts: IV-A8 addition and subtraction of decimals and wholes: 10ths and 100ths.

#### 10. Adding and Subtracting Decimals

Description: This is an activity link to add and subtract decimal hundredths.

Core Concepts: IV-A8 addition and subtraction of decimals and wholes: 10ths and 100ths.

#### 11. Multiplying 3-Digit by 1-Digit Number

Description: This is a video link on multiplying 3-digit numbers by a 1-digit number.

Core Concepts: V-A12 3-digit x 1-digit multiplication with or without regrouping.

Link: Video on multiplying 3 digit times 1-digit

#### 12. Division without Regrouping

Description: This is a video link that shows how to divide without regrouping.

Core Concepts: IV-A16 2, 3-digit ÷ 1-digit with or without regrouping.

#### 13. Whole Number Multiplication by 10 and 100

Description: This link shows whole number multiplication by 10 and 100.

Core Concepts: IV-A18 multiply mentally by 10 and 100.

Description: This is an activity link to multiply whole numbers by 10 and 100.

Core Concepts: IV-A18 multiply mentally by 10 and 100.

#### 14. Open Frame as Numbers or Digits

Description: This activity lets learners find the missing multiplier.

Core Concepts: IV-A19 open frame as numbers or digits.

#### 15. Multiplying by 10, by 100 and by 1000

Description: This video link shows patterns in multiplying whole numbers with the powers of ten.

Core Concepts: IV-B3 multiplying by 10, by 100 and by 1000.

Link: Video on using exponents with powers of 10

#### 16. Area

Description: This link shows the area and perimeter of a rectangle. The teachers and students need to explore the given link and build shapes with the same area with different perimeter and vice-versa.

Core Concepts: IV-C2 area.

#### 17. Angles

Description: This video link is about angles. Teachers need to watch and trim the video as per the requirement in the lesson.

Core Concepts: IV-C4 angles.

Link: Video on types of angles

#### 18. Composite Shapes

Description: This link contains video on composite shapes.

Core Concepts: IV-D4 composite shapes.

Link: Video on what are composite shapes

#### 19. Models of Cylinders, Cones, Prisms and Pyramids

Description: This video is about building skeletal models for 3-D shapes.

Core Concepts: IV-D5 Construct Models of cylinders, cones, prisms and pyramids.

#### 20. Transformations

Description: This video link is about transforming shapes (slide, flip and turn).

Core Concepts: IV-D6 slides, flips, and turns (half, quarter).

Link: Video on shapes: flips, slides and turns

#### 21. Congruence of Polygons

Description: This link contains video on congruent polygons.

Core Concepts: IV-D11 congruence of polygons.

Link: Video on congruence of polygons

#### 22. Bar Graphs

Core Concepts: IV-E2 construct & interpret bar graphs and pictographs. 