February 2025

Suspension bridge

By |2025-02-12T09:32:16+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

The Hong Kong Bridge. Image credit plus.maths.org The Hong Kong Bridge. Image credit plus.maths.org ZIMSEC O Level Combined Science Notes: Suspension bridge

  • Old suspension bridges were usually built using rope/vegetable fibre
  • The ropes could withstand tension forces while they were new but they would quickly deteriorate
  • Suspension bridges are usually constructed […]
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Pumps: Blair pump

By |2025-02-12T09:05:51+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

The blair pump The blair pump ZIMSEC O Level Combined Science Notes: Pumps: Blair pump

  • The pumped was first developed in 1976
  • The design was further refined at the Blair Research Laboratory in Harare
  • Various models have been subsequently designed and made
  • Cumulating in the famous Type B bush pump
  • It is popularly known […]
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The purification of Water

By |2025-02-12T09:08:32+02:00February 12th, 2025|Notes, O Level Science Notes, Ordinary Level Notes|

Water Purification Plant. Image credit cdrmaguire.com Water Purification Plant. Image credit cdrmaguire.com ZIMSEC O Level Combined Science Notes: The purification of Water

  • Large residential areas such as Harare, Chitungwiza and other urban establishments are supplied with piped running water
  • This water is treated so that it is safe to drink and […]
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Productivity Agreements, Commissions, Salary

By |2025-02-12T09:26:55+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

Salary gives status and flexibility. Image credit blogspot.com

Salary gives status and flexibility. Image credit blogspot.comZIMSEC O Level Business Studies Notes: Productivity Agreements, Commissions, Salary

  • A commision -is a form of remuneration that is based on total sales
  • It is a common form of payment with sales agents, insurance brokers etc
  • It is paid upon […]
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Product based Organisational structure

By |2025-02-12T08:56:42+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

An example of Product Based Organisational structure. An example of Product Based Organisational structure.

ZIMSEC O Level Business Studies Notes: Product based Organisational structure

  • This is when organisational operations, departments, duties and tasks are grouped based on particular lines of goods and services.
  • The organisation’s structure is based on major product […]
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Ways of communicating in business

By |2025-02-12T09:29:31+02:00February 12th, 2025|Notes, O Level Business Studies Notes, Ordinary Level Notes|

Phones are a popular means of communication within businesses. Image credit accessableliving.com

ZIMSEC O Level Business Studies Notes: Leadership:Ways of communicating in business

  • There are multiple ways of communication within businesses
  • Sometimes the word methods of communication is used to refer to ways of communication
  • Each way has it’s own advantages […]
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The differences between Early Iron Age and Late Iron Age

By |2025-02-12T09:02:29+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

ZIMSEC O Level History Notes: Early Societies (Late Stone Age – Early Iron Age): The differences between Early Iron Age and Late Iron Age

  • Here is a summary of the differences between Late Iron Age and Early Iron Ages

 

To access more topics go to the History Notes page.

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The Mfecane

By |2025-02-12T09:16:11+02:00February 12th, 2025|Notes, O Level History Notes, Ordinary Level Notes|

The Zulu Army modern reenactment. Image credit britishempire.co.uk

ZIMSEC O Level History Notes: Crisis in Nguniland: The Mfecane

  • It means a time of crushing
  • It was also given a Sesotho name called Difaqane or Lifaqane
  • It was a time of widespread warfare and disorder indigenous groups in Southern Africa from about 1815 […]
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