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Part 1: Subtracting integers
Part 2: Examples of subtracting integers
Part 3: Common mistakes made when subtracting integers

An online application to test your knowledge of evaluating trigonometric functions of special angles.

Video 1: Two-step inequalities
Video 2: Two-step inequality word problem
Video 3: Another two-step inequality word problem
Online activity 1: Answer the short questions on two-step inequalities
Online activity 2: Answer the two-step inequality word problems

Defining and comparing tension, weight, friction and normal forces using free body diagrams.

Utangulizi wa utaratibu wa uendeshaji

Khan Academy video on order of operations with audio translated into Kiswahili

This diagram, Vernier scale use 0.02 scale measurement is 19.44 mm, illustrates how to read the length of the given object using vernier calliper.

Visualising, adding and breaking down vectors in 2 dimensions.

An explanation of wave interference and solution of a few examples to find the value of the total wave when two wave pulses overlap

The wavelength and frequency of a wave are related to one another by the speed of travel of the wave, which depends on the type of wave and the medium through which it is passing.

• Make waves with water, sound, and light and see how they are related.
• Discuss wave properties using common vocabulary.
• Explain how changing the frequency and amplitude affects the characteristics of the wave.
• Design an experiment to measure the speed of the wave.