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Kuelezea maana ya asilimia

Describing the meaning of precent: a Khan Academy video on percentages with the audio translated into Kiswahili

To lay the foundation for understanding what trigonometry is and how it works, do this next activity.

The beauty of a coral reef, the warm radiance of sunshine, the sting of sunburn, the X-ray revealing a broken bone, even microwave popcorn—all are brought to us by electromagnetic waves. The list of the various types of electromagnetic waves, ranging from radio transmission waves to nuclear gamma-ray (γ-ray) emissions, is interesting in itself.

Even more intriguing is that all of these different phenomena are manifestations of the same thing—electromagnetic waves (see Figure 15.1). What are electromagnetic waves? How are they created, and how do they travel? How can we understand their widely varying properties? What is the relationship between electric and magnetic effects? These and other questions will be explored.

An image that illustrates light reflecting off a plain mirror.

In this online lesson you will learn how to compare measurements that have different units.

In this unit you will learn how to convert between common metric units of measure.

Outcomes

By the end of this course you will:

• Be familiar with the different metric units of length
• Be able to compute calculations involving metric units of length
• Be able to convert one metric unit of length to another

Outcome

By the end of this course you will:

• Be able to define what mass is
• Be familiar with the metric units of mass
• Understand how to compare different units of mass
• Be able to convert one unit of mass to another

By the end of this short course, you will be able to:

• Multiply integers
• Divide integers
• Simplify expressions with integers
• Evaluate variable expressions with integers
• Translate English phrases to algebraic expressions
• Use integers in applications

This video explores how to multiply decimals by 10, 100, 1000 etc