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Look at these pictures, guess the theme of the lesson and tell

Mechanical motion. Speed. Teacher: Klimenko E.A.

Vocabulary revision: match the word and its translation Путь Точка отсчета Distance Displacement Trajectory Reference system Reference point Material point Mechanical motion Speed, velocity Cargo Система отсчета Скорость Траектория Перемещение Механическое движение Груз

Vocabulary revision: match the word and its definition is the motion when the object or its parts change the position during some time. is total distance divided by total time. is the motion when the objects passes equal distances for equal time. is the motion when the object passes different distances for equal time Vocabulary revision: match the word and its definition Mechanical motion Speed Uniform motion Non-uniform motion

Distance Displacement Material point Trajectory Reference object is a part of trajectory that objects travel for some time. is a directed distance connecting initial and final position. is an object the sizes of which can be neglected. is the track left by an object in the form of a line. is the point that is thought motionless. is the system of coordinates, which shows the reference object and hours. Distance Displacement Material point Trajectory Reference object Reference system

10-9 correct answers – “5” 8-7 correct answers – “4” Put marks. 10-9 correct answers – “5” 8-7 correct answers – “4” 6-5 correct answers – “3”

Practice work You are in the groups of three. Director - checks the whole group’s work Assistant - carries the experiment Secretary - writes on the paper results Think over the roles in a group.

Practice work Find speed of the object. no cargo – 1st group, 1cargo – 2nd group, 2cargo – 3rd group, 3 cargo - 4th group Write the problem on the A3 paper. Stick the title of the work.

Practice work Objectives: to find speed of the object practically. Devices: track, car, stopwatch, meter rule.

Conclusion 1. Write one thing you liked at the lesson. 2. Write two formulae studied at the lesson. 3. Write three definitions you learnt at the lesson.