Area and perimeter
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This document provides instruction on calculating the perimeter and area of various shapes. It begins by defining perimeter as the distance around the outside of a shape. It then works through examples of finding the perimeter of different shapes by counting and adding the lengths of each side. It introduces area as the amount of space inside a shape. It demonstrates how to calculate the area of rectangles by counting squares and using the formula of length x width. The document also covers calculating the area of irregular and composite shapes by breaking them into regular shapes. Worksheets are included for students to practice these concepts.
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This document provides instructions and formulas for calculating the perimeter and area of rectangles and squares. It includes the objectives of finding perimeter and area using formulas, provides the relevant formulas, and includes example perimeter and area word problems to solve. Key information covered includes the definitions of perimeter and area, the perimeter and area formulas for rectangles and squares, and example activities applying the formulas.
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Available from http://www.teachingpacks.co.uk/the-area-and-perimeter-pack/
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Angles
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- - - - - - - - - - - - -
- Definition of Angles
- Parts of Angles
- Protractor
- Kinds of Angles
- Measuring Angles
The Assignment on the last slide is for them to have a background on the next lesson.
Area of a triangle and parallelogram
Explains about the concept ,formula,and solving problems on area of a square and parallelogram.The development of a formula is also explained with the help of examples for both triangle and parallelogram.The power point is made for VIIth standard s.s.c board text book.
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1) Addition involves combining numbers to find a total sum. The order of the numbers does not change the sum. When adding multi-digit numbers, you start with the ones place and work left.
2) Subtraction finds the difference between a starting number and the number removed. You may need to regroup tens into ones when subtracting multi-digit numbers.
3) Multiplication is used to find the total when there are a certain number of equal groups. When multiplying multi-digit numbers, you start with the ones place and work left.
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This document discusses calculating the areas and perimeters of various shapes. It provides examples of finding the perimeter by counting sides and finding the area by counting squares for both regular and irregular shapes. It also introduces calculating the area of rectangles using the formula of length x width and calculating the total area of composite shapes by finding the individual areas and summing them.
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The Area and Perimeter Pack
Help your children to learn about the area and perimeter of shapes with our bumper resource pack. Includes a variety of classroom teaching, display and activity resources to introduce the topic to your children and then extend their knowledge and skills!
Available from http://www.teachingpacks.co.uk/the-area-and-perimeter-pack/
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1) The document provides formulas for calculating the surface area and volume of basic geometric shapes like rectangles, triangles, circles, cylinders, prisms, and triangular prisms.
2) It explains how to identify the key dimensions needed to substitute into the formulas, like finding the radius, diameter, height, and base/length of an object.
3) Examples are provided to demonstrate applying the formulas step-by-step to calculate surface areas and volumes.
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The document provides instructions on calculating the perimeter and area of different shapes. It defines perimeter as the distance around the outside of a shape and area as the amount of space inside the shape. It explains how to find the perimeter and area of rectangles, irregular shapes, and composite shapes that are made up of other shapes. Formulas for calculating perimeter and area of rectangles are given. Worked examples of calculating perimeter and area for different shapes are provided.
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The document discusses factors and multiples of numbers. It defines factors as the numbers that multiply together to get a product. It provides examples of finding all the factors of several numbers by trying all combinations of multiplying smaller numbers. It then defines multiples as the results of multiplying a number by the counting numbers 1, 2, 3, etc. It gives examples of listing the multiples of 4. Finally, it briefly introduces prime and composite numbers, with prime numbers only having two factors and composite having more.
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Joseph is planning to make a geometric collage of a volcano. He has a piece of navy blue cloth that is 17 cm long and 15 cm wide. He plans to cut it diagonally into two triangles. The document discusses deriving the formula for finding the area of a triangle. It states that the area of a triangle is equal to one-half base times height. It works through an example of finding the area of one of the triangles formed from Joseph's cloth, which is 127.5 cm^2. The document provides practice problems for readers to find the area of additional triangles.
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The document discusses the circumference of circles. It defines circumference as the distance around a circle and diameter as the distance across a circle. It presents the formula for circumference which is C=πd, where C is circumference, d is diameter, and π is approximately 3.14. Several examples are given of using the formula to calculate the circumference given the diameter. The document also discusses using the alternative radius-based formula, C=2πr, to find circumference when given the radius instead of the diameter.
Angles
This preview may not appear the same on the actual version of the PPT slides.
Some formats may change due to font and size settings available on the audience's device.
To get/buy a soft copy, please send a request to queenyedda@gmail.com
Inclusions of the file attachment:
* Fonts used
* Soft copy of the WHOLE ppt slides with effects
ACCEPTING COMMISSIONED POWERPOINT SLIDES
ACCEPTING COMMISSIONED POWERPOINT SLIDES
ACCEPTING COMMISSIONED POWERPOINT SLIDES
EMAIL queenyedda@gmail.com
- - - - - - - - - - - - -
- Definition of Angles
- Parts of Angles
- Protractor
- Kinds of Angles
- Measuring Angles
The Assignment on the last slide is for them to have a background on the next lesson.
Area of a triangle and parallelogram
Explains about the concept ,formula,and solving problems on area of a square and parallelogram.The development of a formula is also explained with the help of examples for both triangle and parallelogram.The power point is made for VIIth standard s.s.c board text book.
The four operations
1) Addition involves combining numbers to find a total sum. The order of the numbers does not change the sum. When adding multi-digit numbers, you start with the ones place and work left.
2) Subtraction finds the difference between a starting number and the number removed. You may need to regroup tens into ones when subtracting multi-digit numbers.
3) Multiplication is used to find the total when there are a certain number of equal groups. When multiplying multi-digit numbers, you start with the ones place and work left.
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The document discusses calculating the perimeter of different shapes. It explains that the perimeter is the distance around the edges of a shape. To find the perimeter of a rectangle, you need to know the length and width, and then add them together. It provides examples of calculating perimeters of rectangles and squares by adding up the side lengths. The key steps to find perimeter are to identify the measurements of the sides and then add them together.
Surface area and volume of cuboids
This document discusses calculating the surface area and volume of cuboids and other 3D shapes. It provides examples of finding the surface area of cuboids by adding the areas of each face. The formula for surface area of a cuboid is given as 2lw + 2hw + 2lh, where l, w, and h are the length, width, and height. Examples are also given for finding the volume of cuboids using the formula length × width × height and relating volume to water displacement.
Square root
This document provides instructions for estimating square roots through visual representations and diagrams. It includes activities where students arrange square tiles into larger squares to estimate the square root. Students are asked to estimate the square root of various numbers by drawing the largest possible square from that number of squares and seeing how many are left over. The activities aim to build an understanding of what a square root is and how to approximate it through visualization and trial and error. Later questions assess understanding by having students calculate exact square roots with a calculator and explain differences from their estimates.
CO.pptx
This document discusses finding the perimeter of different shapes. It defines perimeter as the distance around a two-dimensional shape. It provides the formulas for calculating the perimeter of rectangles as P=2(length + width), squares as P=4xside, and triangles as P=a+b+c. Examples are given for calculating each shape's perimeter. The document encourages exploring the school grounds to draw shapes and find perimeters, and calculating the perimeter of a table at home.
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mathiv-findingtheareaofanirregularfigures-160201154207.pptx
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9463138669|RMS Exam Coaching Center in Jalandhar|ANAND CLASSES
9463138669|RMS Exam Coaching Center in Jalandhar|ANAND CLASSES
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Area and perimeter
- 2. The distance around the outside of a shape is called the perimeter. 8 cm 6 cm 8 cm 6 cm The perimeter of the shape is 8 + 6 + 8 + 6 = 28cm. First we need to find he length of each side by counting the squares.
- 3. What is the perimeter of each of these shapes? Your teacher will give you copy of the worksheet. 18cm 18cm 18cm 22cm 26cm
- 4. Now find the perimeter of these shapes. They are not drawn to scale. 3cm 3cm 3cm 3cm 3cm 3cm 5cm 7cm7cm 3cm 4cm 4cm 4cm 4cm 3cm 3cm 3cm3cm Perimeter = 18cm Perimeter = 22cm Perimeter = 28cm
- 5. The area of a shape is the amount of space inside it. The area of the shape is 18cm 2 . To find out how much shape is inside we can count the squares.
- 6. What is the area of each of these shapes? Your teacher will give you copy of the worksheet. 12cm 2 26cm 2 26cm 2
- 7. To find the area of an irregular shape you first count the full squares inside it. This is an irregular shape. This means that the sides aren’t straight.
- 8. You then count all the other squares which have more than half the area covered. The area of the shape is 60cm 2 .
- 9. What is the area of each of these shapes? Your teacher will give you copy of the worksheet. 24cm 2 25cm 2 22cm 2 35cm 2
- 10. Counting each square can take a long time. Does anyone know a quicker way? The area of the shape is 48cm 2 . The rectangle is made of 6 rows of 8 squares. To work out the number of squares we times 6 by 8.
- 11. What is the area of each of these shapes? Your teacher will give you copy of the worksheet. 20cm 2 18cm 2 14cm 2 30cm 2 22cm 2
- 12. We can work out the area of a rectangle without the grid. length width Area = length x width
- 13. Now work out the area of these rectangles. They are not drawn to scale. 36cm2 35cm 2 20cm 2 25cm2 4cm 9cm 7cm 5cm 5cm 4cm 2cm 12.5cm
- 14. A shape that is made from other shapes is known as a composite shape. To find the area of this shape we have to split it up into two rectangles. 10cm 8cm 8cm 2cm 4cm 4cm Area = 4 x 10 40cm 2 Area = 4 x 8 32cm 2 Total area = 40 + 32 = 72 cm 2
- 15. Find the area and perimeter of each of these shapes? Your teacher will give you copy of the worksheet.9cm 5cm 5cm 2cm 4cm 5cm 4cm 2cm 11cm 7cm 4cm 3cm 3cm 3cm 7cm 6cm 6cm 11cm 2cm 4cm 5cm 4cm
- 16. 9cm 5cm 5cm 2cm 4cm 5cm 4cm 2cm Area = 5 x 9 45cm 2 Area = 4 x 5 20cm 2 Total area = 45 + 20 = 65 cm 2 Perimeter = 36 cm
- 17. 6cm 6cm 11cm 2cm 4cm 5cm Area = 2 x 5 10cm 2 Area = 6 x 6 36cm 2 Total area = 10 + 36 = 46 cm 2 Perimeter = 34 cm
- 18. 11cm 7cm 4cm 3cm 3cm 3cm 7cm Total area = 28 + 16 + 21 = 65 cm2 Perimeter = 42 cm Area = 4 x 7 Area = 4 x 4 4cm Area = 3 x 7 21cm2 28cm 2 16cm 2 There is another way of doing this question.
- 19. 11cm 7cm 4cm 3cm 3cm 3cm 7cm Total area = 77 – 12 = 65 cm2 Perimeter = 42 cm Area = 7 x 11 Area = 3 x 4 4cm 77cm 2 12cm 2
- 25. Review What is the area of the moon? _____________________cm 2 What is the area of the rectangle? _____________________cm 2 What is the perimeter of the rectangle? _____________________cm Name:____________________
- 26. 4cm 4cm 4cm 6cm 8cm 2cm What is the area of the compound shape? _____________________cm 2 What is the perimeter of the compound shape? _____________________cm What is the area of the house? _____________________cm 2