teaching aids text book exercise book sheet of photocopied paper

... and answer -take notes -take notes I/ Requirement of books :-a textbook -a workbook-a notebook -a writing notebook-a copybook -a preparing notebook -a pencil * II/ The main content :1.the simple ... 19/8Class : 7 I/ Aim -Introductions -Requirement of books -giving commands in class -giving the content of the English 7 II/ Teaching aid : text book ,chalks Who is the monitor How many students ... comparisons / a lot of /many II/ Objective : By the end of the lesson , Ss will be able to use simple present comparisons ,a lot of / many correctly III/ Teaching aid : Textbook , poster ,colored

Ngày tải lên: 11/04/2021, 10:22

... form Name: Year of bitrh: Place of bitrh: Invention: Name of the countries to emigrate: Name of the university to work: Name of his assistant: Year of introducing telephone: Year of the telephone ... their notebooks using the information in the grid By the end of the lesson, students will be able to write a telephone massage B Teaching aids: Textbook, pictures, poster, tape and cassete book , ... 11B Teaching aids: Textbook, pictures, poster, tape and cassete book , chalk C Methods: Eliiting, pairwork, groupwork, ask and answer II: Warmer: : * Brainstorming : - Ask Ss to think of the

Ngày tải lên: 19/04/2021, 20:53

... subject of the research 3.1 Object of the research Pupils’ competence-based teaching 3.2 Subject of the research Measures of competence-based teaching for text reading comprehension for pupils of ... consideration of the texts selected as reading comprehension teaching linguistic data for the pupils of grades 4 and 5 in the current Vietnamese textbook, we classify text into two big groups: art text ... (story and description), dramatic text and non-art text including administrative text, scientific text, journalistic text, political text and life text Based on such text classification by linguistic

Ngày tải lên: 18/01/2020, 06:26

... DEPARTMENT OF EDUCATION AND TRAINING HOANG HOA 4 HIGH SCHOOL EXPERIENTAL INITIATIVE MAKING FULL USE OF THE APPLICATION OF PROJECT BASED LEARNING IN TEACHING UNIT 9, ENGLISH TEXT BOOK 11, EDUCATION ... To achieve that goal, the Ministry of Education has implemented a number of specific measures, including changing textbooks as one of the solutions to help teaching and learning foreign languages ... transformation of experience” (Kolb, 1984) In what follows I shall concentrate on “Making full use of the application of PBL in teaching speaking skill in unit 9, English textbook 11, Education

Ngày tải lên: 26/10/2022, 09:07

... teeth The pinion is made of cast steel having a static stress of 80 MPa and the gear is made of cast iron with a static stress of 55 MPa The tooth profiles of the gears are of 14 1 /2º composite ... more smoothly than a pair of spur gears with the same number of teeth. 30.7 30.7 StrStrStrength of Beength of Beength of Bevvvel Gearel Gearel Gearsssss The strength of a bevel gear tooth is obtained ... 7 Strength of Bevel Gears. 8 Forces Acting on a Bevel is shown in Fig 30.1 The elements of the cones, as shown in Fig 30.1 (a), intersect at the point of intersection of the axis of rotation

Ngày tải lên: 29/10/2013, 20:15

... 5 Ratio of Driving Tensions 10 Sheave for Fibre Ropes. 11 Ratio of Driving Tensions for Fibre Rope. 17 Properties of Wire Ropes. 18 Diameter of Wire and Area of Wire Rope. 19 Factor of Safety ... circumferential length of the belt at the pitch width (i.e the width at the neutral axis) of the belt The value of the pitch width remains constant for each type of belt irrespective of the groove angle ... standard pitch lengths for the various types of belt. Table 20.3 Standard pitch lengths of V-belts according to IS: 2494-1974 Type of belt Standard pitch lengths of V-belts in mm Note: The V-belts are

Ngày tải lên: 27/01/2014, 15:20

... links of this type of chain are of square shape, as shown in Fig 21.4 (b) Such type of chains are used in hoists, cranes, dredges The manufacturing cost of this type of chain is less than that of ... velocity of 0.25 m / s The hoisting and hauling chains are of the following two types: 1 Chain with oval links The links of this type of chain are of oval shape, as shown in Fig 21.4 (a) The joint of ... Drtio of Chain Driviviveses The velocity ratio of a chain drive is given by V.R = 1 2 2 1 N T N ) T where N1 = Speed of rotation of smaller sprocket in r.p.m., N2 = Speed of rotation of larger

Ngày tải lên: 27/01/2014, 15:20

... coefffffficient of ficient of ficient of fluctualuctualuctuation of speed (tion of speed (CSSSSS).S.No Type of machine or class of service Coefficient of fluctuation of speed (C S) 22.3 The fluctuation of ... maximumfluctuation of energy of the flywheel rim will be 95% of the flywheel ∀ Maximum fluctuation of energy of the rim, () E) rim = 0.95 × 11 250 = 10 687.5 N-m We know that maximum fluctuation of energy of ... Width of rim, t = Thickness of rim, Trang 14A = Cross-sectional area of rim = b × t,D = Mean diameter of flywheel R = Mean radius of flywheel, 7 = Density of flywheel material, ∋ = Angular speed of

Ngày tải lên: 27/01/2014, 15:20

... when the valve blows off freely),2 Number of turns of the coil Let n = Number of active turns of the coil. We know that the deflection of the spring (&), 3 Free length of the spring Taking ... Number of turns of the spring coil Let n = Number of active turns of the spring coil. We know that the deflection of the spring (&), 3 Free length of the spring We know that free length of the ... length of the wire,l = Length of one coil × No of active coils = )4D × n Let 5 = Angular deflection of the wire when acted upon by the torque T , Axial deflection of the spring, and G = Modulus of

Ngày tải lên: 27/01/2014, 15:20

... engagement anddisengagement of the shafts is obtained by means of a clutchwhich is operated by a lever 24.224.2 TTTTTypes of Clutchesypes of ClutchesFollowing are the two main types of clutchescommonly ... 7. The projecting parts of the clutch should be covered by guard 24.7 24.7 TTTTTypes of Frypes of Frypes of Friction Clutchesiction Clutches Though there are many types of friction clutches, yet ... of the shaft, 2 Mean radius and face width of the friction lining assuming the ratio of the mean radius to the face width as 4, 3 Outer and inner radii of the clutch plate, and 4 Dimensions of

Ngày tải lên: 27/01/2014, 15:20

... know that linear velocity of the worm, l NW vW = 60 1106 n A Textbook of Machine Design and linear velocity of the worm gear, π DG N G vG = 60 Since the linear velocity of the worm and worm gear ... n where n = Number of starts of the worm From above, we see that velocity ratio may also be defined as the ratio of number of teeth on the worm gear to the number of starts of the worm The following ... Design of worm Let lN = Normal lead, and λ = Lead angle 1114 n A Textbook of Machine Design Worm gear of a steering mechanism in an automobile We have discussed in Art 31.12 that the value of x...

Ngày tải lên: 29/10/2013, 20:15

... unit of force adopted is such that it produces a unit acceleration to a body of unit mass ∴ F = m.a = Mass × Acceleration 10 n A Textbook of Machine Design In S.I system of units, the unit of force ... 6000 12 n A Textbook of Machine Design 1.22 Mass Moment of Inertia It has been established since long that a rigid body is composed of small particles If the mass of every particle of a body is ... **** In some of the question papers of the universities and other examining bodies standard values are not used The authors have tried to avoid such questions in the text of the book However,...

Ngày tải lên: 26/12/2013, 00:17

... strength cast iron This type of cast iron is obtained by adding small amounts of magnesium (0.1 to 0.8%) to the molten grey iron The addition of magnesium 24 n A Textbook of Machine Design causes ... are made suitable for cutting tools by firing soft clay objects in a kiln 44 n A Textbook of Machine Design The process of hardening consists of (a) heating the metal to a temperature from 30 ... Since the wear resistance of beryllium copper is five times that of phosphor bronze, therefore, it may be used as a bearing metal in place of phosphor bronze 48 n A Textbook of Machine Design It...

Ngày tải lên: 26/12/2013, 00:17

... controls the size of the hole, as the billet is forced over it * For complete details, please refer to Authors' popular book ‘A Text Book of Workshop Technology’ 60 n A Textbook of Machine Design ... keying fit Heavy keying fit—used for tight assembly of mating parts 72 n A Textbook of Machine Design Type Class of fit With holes Remarks and uses of shaft H6 H8 p p5 *p6 — r r5 *r6 — s s5 *s6 s7 ... processes is beyond the scope of this book, but a few of them which are important from the subject point of view will be discussed in the following pages 3.3 Casting It is one of the most important manufacturing...

Ngày tải lên: 26/12/2013, 00:17

... all specimens of one standard size Since the dimensions of the specimen influence the result, therefore some standard means of comparison of results are necessary 100 n A Textbook of Machine Design ... unnecessary risk of failure The values of factor of safety based on ultimate strength for different materials and type of load are given in the following table: 102 A Textbook of Machine Design ... points : The reliability of the properties of the material and change of these properties during service ; The reliability of test results and accuracy of application of these results to actual...

Ngày tải lên: 26/12/2013, 00:17

... not a direct example of the current chapter 168 n A Textbook of Machine Design Distance of N.A from the top of the flange, yt = y = 28.2 mm Distance of N.A from the bottom of the web, yc = 90 ... Distance of N.A from the bottom of the link, yt = y = 1.2 a mm Distance of N.A from the top of the link, yc = a – 1.2 a = 1.8 a mm Eccentricity of the load (i.e distance of N.A from the point of application ... and the total angle of twist is equal to the sum of the angle of twists of the two shafts Mathematically, total angle of twist, T l1 T l2 + C1 J1 C2 J If the shafts are made of the same material,...

Ngày tải lên: 26/12/2013, 00:17

... value of 20 kN and a maximum value of 50 kN Determine the diameter of bar by taking a factor of safety of 1.5, size effect of 0.85, surface finish factor of 0.9 The material properties of bar ... over a range of Χ 40% Determine the diameter of shaft if a reduction factor of 1.2 is applied to the variable component of bending stress and shearing stress Assume 222 n A Textbook of Machine ... reversed axial load of 180 kN Find the diameter of the rod for a factor of safety of Neglect column action The material has an ultimate tensile strength of 1070 MPa and yield strength of 910 MPa The...

Ngày tải lên: 23/01/2014, 06:20

... Textbook of Machine Design Thickness of pressure tank We know that thickness of pressure tank, t = ∀ 800 p.d # # 24 mm Ans 2!t1 % ∀ 50 ∀ Diameter and thickness of cylinder Let D = Diameter of ... ∗ = 0.29 Thickness of a tube We know that thickness of a tube, +l = t = p d 0.625 !t1 ∀ 100 # # 31.25 mm Ans !t1 !t1 232 n A Textbook of Machine Design Increase in diameter of a tube We know ... the outer surface of the shell The radial stress is maximum at the inner surface and zero at the outer surface of the shell 234 n A Textbook of Machine Design In the design of thick cylindrical...

Ngày tải lên: 23/01/2014, 06:20

... diameter of pipe + × Dia of bolt = D + 2t + 2d = 50 + (2 × 12) + (2 × 22) = 118 mm 278 n A Textbook of Machine Design and side of this square, L + 118 + 83.5 mm 2 The sides of the flange must be of ... 10 mm Number of bolts, n = 0.0275 D + 1.6 (D is in mm) where 272 n A Textbook of Machine Design Thickness of flange, Width of flange, tf = 1.5 t + mm B = 2.3 d Outside diameter of flange, Do ... standardised 270 n A Textbook of Machine Design Note: As soon as the size of pipe is determined, the rest of the dimensions for the flanges, bolts, bolt holes, thickness of pipe may be fixed...

Ngày tải lên: 23/01/2014, 06:20

... 9.25 First of all, let us find the centre of gravity (G) of the rivet system Let x = Distance of centre of gravity from OY, y = Distance of centre of gravity from OX, 326 n A Textbook of Machine ... resistance of the rivets, ∃ Ps = n × ×d2×# (i) 300 n A Textbook of Machine Design where n = Total number of rivets Knowing the inner diameter of the boiler shell (D), and the pressure of steam ... the values of pitch due to Rotscher 316 n A Textbook of Machine Design riv ivets for structural joints Table 9.8 Pitch of rivets for structural joints Thickness of plate (mm) Diameter of rivet...

Ngày tải lên: 23/01/2014, 06:20