Displaying 1 - 10 of 11 Resources

Biodiversity and natural selection

Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms. 

Subject and Topic
Form 2
Biology
Balance of nature
The natural environment
Resource Type
Video
Language
English
Publisher
California Academy of Sciences
Publication Date
2014
Creator/Author
California Academy of Sciences
Keyword
Biodiversity
Natural selection

Density

Outcomes:

  • Describe how the concept of density relates to an object's mass and volume.
  • Explain how objects of similar mass can have differing volume, and how objects of similar volume can have differing mass.
  • Explain why changing an object's mass or volume does not affect its density (ie, understand density as an intensive property).
  • Measure the volume of an object by observing the amount of fluid it displaces.
  • Identify an unknown material by calculating its density and comparing to a table of known densities.
Subject and Topic
Form 1
Biology
Introduction to biology
Scientific processes in biology
Resource Type
Simulatie
Language
English
Publisher
pHET Interactive Simulations
Publication Date
2023
Creator/Author
Diana López Tavares
Jonathan Olson
Keyword
Density
Mass
Volume
Archimedes' Principle

Evolution Clarification Swahili

Clarifying some points on evolution and intelligent design.

Subject and Topic
Form 1
Biology
Introduction to biology
Scientific processes in biology
Resource Type
Video
Language
English
Publisher
KhanAcademyKiswahili
Publication Date
2012
Creator/Author
Khan Academy
Contributor
KhanAcademyKiswahili
Keyword
Evolution
Human Evolution

Human fertilisation and early development

Overview of fertilisation and early human development. From conception leading to a zygote to blastocyst, embryo and fetus.

Subject and Topic
Form 1
Biology
Introduction to biology
Scientific processes in biology
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2017
Creator/Author
Sal Khan
Keyword
fertilisation

Matter and energy in food webs

Food webs are models that demonstrate how matter and energy is transferred between producers, consumers, and decomposers as the three groups interact within an ecosystem. Transfers of matter into and out of the physical environment occur at every level. Decomposers recycle nutrients from dead plant or animal matter back to the soil in terrestrial environments or to the water in aquatic environments. The atoms that make up the organisms in an ecosystem are cycled repeatedly between the living and nonliving parts of the ecosystem.

Subject and Topic
Form 2
Biology
Balance of nature
Food chain and food web
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2022
Creator/Author
Sal Khan
Keyword
Food webs

Mitosis

Mitosis is how cells divide! Learn what happens in all the phases of mitosis: prophase, metaphase, anaphase, and telophase.

Subject and Topic
Form 1
Biology
Introduction to biology
Scientific processes in biology
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2015
Creator/Author
Sal Khan
Keyword
Mitosis
Cells

Sura za Meiosisi - Phases of Meiosis

The phases of Meiosis.

Subject and Topic
Form 1
Biology
Introduction to biology
Scientific processes in biology
Resource Type
Video
Language
English
Publisher
KhanAcademyKiswahili
Publication Date
2012
Creator/Author
KhanAcademyKiswahili
Keyword
Meiosis

Visualising vectors in 2 dimensions

Visualising, adding and breaking down vectors in 2 dimensions.

Subject and Topic
Form 1
Physics
Force
Effects of forces
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2011
Creator/Author
Sal Khan
Keyword
Vectors
two dimensional motion

What is a force?

In this unit you will learn what a force is and find out about different types of forces. This will allow you to identify forces at work in your everyday life and understand the effects of forces.

Subject and Topic
Form 1
Physics
Force
Effects of forces
Resource Type
Studieboeken
Language
English
Publisher
Department of Higher Education
Publication Date
No date
Creator/Author
Linda Pretorius
Contributor
Michael Atkinson
Keyword
Force
External Force
Net Force

Worked example: analysing a generic food web

We can analyse the arrows in a food web to identify producers, primary consumers, secondary consumers, and decomposers.

Subject and Topic
Form 2
Biology
Balance of nature
Food chain and food web
Resource Type
Video
Language
English
Publisher
Khan Academy
Publication Date
2022
Creator/Author
Sal Khan
Keyword
Food webs