Bedienungsanleitung Knex 78620 - Education Intro to Wheels and Axles and Inclined Planes Teachers Guide (Seite 22 von 49) (Englisch)

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wheels and axles and inclined planes

website: www.knexeducation.co.uk

Lesson 4: The Steering Wheel

Lesson�4:�The�Steering�Wheel

Time: 1.5 hours

Learning Objectives - Children should learn:

 •toinvestigateanddisassembleproductsinordertolearn

how they work

 •aboutsimplemachinesthatmakeiteasiertodothings

 •torelatesciencetothewaysfamiliarmachineswork

 •tocommunicateinformationaboutproductsand

mechanisms through labelled drawings

Possible Teaching and Learning Activities

Introduction

This lesson may be used to support the QCA/DfES Scheme

of Work Exemplar Materials for:

Design and Technology Unit

• 6 D: Controllable Vehicles.

Whole Class

 • Basedonthechildren’sfindingsfromearlierlessons,

review how a wheel and axle mechanism can be used

in two different ways:

1. In the K’NEX Well model, a large wheel - the

handle - was used to turn a small axle. This

mechanism required a small effort to produce an

increase in turning forces at the axle and so made

the job of lifting a heavy object easier.

2. In the K’NEX Paddleboat model, a small axle

was used to turn a large wheel. This mechanism

needed a large effort at the axle but only produced

small forces at the wheel rim. The wheel rim,

however, moved much faster than the axle.

 • Explaintothechildrenhow,inthislesson,theywill

investigate the way in which a wheel and axle

mechanism can be used to help control the direction in

which a vehicle travels.

 • Talkabouthowdifferenttypesoftransportcanbe

steered. For example:

   •Boatsandaircraft

   •Bicyclesandtrolleys

   •Cars,trucksandbuses

   •Vehiclestheyhavemadethemselves

   •Trackedvehicles

Vocabulary

wheel, axle, linkage,

parallel linkage, parallelogram,

steering, mechanism, faster,

slower, diameter, modify

Resources

Each group of 2-3 children

will need:

• 1 K’NEX Understanding

Mechanisms: Wheels and Axles

and Inclined Planes kit with

Building Instructions booklet.

Useful Internet Web Sites:

www.howstuffworks.com/steering:

Demonstrates how a car’s steering

system works. Good background

information for teachers.

For Reference

Macaulay, David. ‘The Way Things

Work.’ Houghton Mifflin Company.

1988. Either the book or CD ROM

is an excellent resource.

• Rudders

• Pivots

• Steering Wheels

• Answers will vary

• Two motors, using forward and

reverse gears

If time permits, allow the children to use

the school library or the Internet

to research these different methods of

controlling the direction of movement.

Encourage them to find pictures of

different types of steering mechanisms

and create a wall display.

Education

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