Lesson Notes By Weeks and Term - Senior Secondary 1

Wheels and tyres II

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TERM – 3RD TERM

WEEK TEN

Class: Senior Secondary School 1

Age: 15 years

Duration: 40 minutes of 5 periods each

Date:

Subject: AUTO MECHANICAL

Topic: WHEELS AND TYRES II

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Differentiate between tube tyre and tubeless tyre

II.) Mention the advantages of tube tyre

III.) Mention the advantages of tubeless tyre

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of tube tyre and tubeless tyre and state their differences

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher explain the advantages of tube tyre and tubeless tyre

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

WHEELS AND TYRES II

A tyre tube is a separate inflatable rubber tube placed inside a tyre, which holds the air that inflates the tyre. It is commonly used in tube-type tyres, where the tube is placed between the tyre and the wheel rim to contain the air pressure required for the tyre to function.

Tubeless tyre

Tubeless tyres, on the other hand, are tyres that do not require an inner tube to hold air. Instead, the tyre's inner lining is designed to form an airtight seal with the wheel rim, allowing the tyre to hold air directly. Tubeless tyres rely on the seal between the tyre and rim to maintain air pressure, providing advantages such as reduced risk of sudden deflation and potentially lighter weight compared to tube-type tyres.

Differences between tube tyre and tubeless tyre

Features

Tube-Type tyre     

Tubeless tyre        

Construction

Consists of an inner tube filled with air 

No inner tube; air directly inflates the tyre     

Sealant 

Requires a separate tube to hold air

No tube needed, the tyre seals directly to the rim

Puncture Response

Tube can be patched or replaced easily   

Requires tyre sealant or patch kit for repair 

Performance 

 Generally heavier due to the added weight of the tube

Lightweight design potentially enhances performance

Maintenance   

Tubes require periodic inspection and replacement  

 Less maintenance required, but still needs monitoring

Advantages of Tube-Type tyres

  1. Cost-effective option, typically cheaper to purchase and maintain.
  2. Easier to repair and replace inner tubes if punctured.
  3. Can provide better shock absorption due to the additional cushioning provided by the tube.

Advantages of Tubeless tyres

  1. Reduced risk of sudden deflation due to slow air leakage when punctured.
  2. Potentially lighter weight, enhancing vehicle performance and fuel efficiency.
  3. Generally offer improved resistance to pinch flats and sidewall damage.
  4. Minimal maintenance required compared to tube-type tyres.
  5. Lower rolling resistance, potentially improving fuel efficiency and tyre longevity.

EVALUATION: 1. Differentiate between tube tyre and tubeless tyre

  1. Identify 3 advantages of tube tyre
  2. Mention 3 advantages of tubeless tyre

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively