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Part 1: Adding integers
Part 2: Examples of adding integers
Part 3: Common mistakes made when adding integers

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

• Determine the variables that affect the strength and direction of the electric field for a static arrangement of charges.
• Investigate the variables that affect the strength of the electrostatic potential (voltage).
• Explain equipotential lines and compare them to the electric field lines.
• For an arrangement of static charges, predict the electric field lines. Verify the prediction using vector addition.

Part 1: Closure property of whole numbers with specific reference to adding, subtracting, multiplying and dividing whole numbers
Part 2: Examples of closure property of whole numbers
Part 3: Common mistakes and misconceptions

Part 1: Commutative property of whole numbers under addition, subtraction, multiplication and division 
Part 2: Examples of commutative property of whole numbers under addition and multiplication
Part 3: Common mistakes and misconceptions

Plant cells have a cell wall in addition to a cell membrane, whereas animal cells have only a cell membrane. Plants use cell walls to provide structure to the plant. Plant cells contain organelles called chloroplasts, while animal cells do not. Chloroplasts allow plants to make the food they need to live using photosynthesis.

These videos look at how to compare decimals.

This online activity provides you with exercises on converting fractions to decimals.

• Relate the electrostatic force magnitude to the charges and the distance between them
• Explain Newton's third law for electrostatic forces
• Use measurements to determine Coulomb’s constant
• Determine what makes a force attractive or repulsive

This course will explain what decimals are, how fractions can be expressed as decimals and how to convert fractions to decimals.