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Full Lesson

Understanding Primary Sources, Making Inferences, and Drawing Conclusions

Effective readers must understand the difference between types of sources and choose credible sources of information to support research. Readers must also consider the content of their reading materials and draw their own conclusions. Primary Sources When we read and research information, we must differentiate between different types of sources. Sources are often classified depending …

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Decimals and Fractions

This lesson introduces the basics of decimals and fractions. It also demonstrates changing decimals to fractions, changing fractions to decimals, and converting between fractions, decimals, and percentages. Introduction to Fractions A fraction represents part of a whole number. The top number of a fraction is the numerator, and the bottom number of a fraction is the denominator. The numerator …

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Basic Multiplication and Division

This lesson describes the process of multiplying and dividing numbers and introduces the order of operations, which governs how to evaluate expressions containing multiple arithmetic operations. Multiplication Addition can be tedious if it involves multiple instances of the same numbers. For example, evaluating 29 + 29 is easy, but evaluating 29 + 29 + 29 …

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Basic Addition and Subtraction

This lesson introduces the concept of numbers and their symbolic and graphical representations. It also describes how to add and subtract whole numbers. Numbers A number is a way to quantify a set of entities that share some characteristic. For example, a fruit basket might contain nine pieces of fruit. More specifically, it might contain three apples, …

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Chemical Bonds

This lesson introduces bonding and explains the three ways in which atoms can become stable. The rest of the lesson examines different types of bonds in more detail. The following video will provide a review on Chemical Bonds. Introduction to Bonding Chemical elements found in the periodic table have different levels of reactivity. The number …

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Properties of Matter

This lesson introduces the properties of matter, which are fundamental to the understanding of chemistry. The following video will provide a review on States of Matter & Properties of Matter. Matter and Its Properties Aluminum, clothing, water, air, and glass are all different kinds of matter. Matter is anything that takes up space and has …

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States of Matter

This lesson explains the differences between solids, liquids, gases, and plasmas. It also describes how a sample can change from one state of matter to another. The following video will provide a review on the States of Matter. States of Matter On Earth, substances are found in four states of matter: solid, liquid, gas, and …

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Genetics and DNA

The lesson introduces genetics, which is the study of heredity. Heredity is the characteristics offspring inherit from their parents. This lesson also examines Gregor Mendel’s theories of heredity and how they have affected the field of genetics. Part I Part II Gregor Mendel and Garden Peas From experiments with garden peas, Mendel developed a simple …

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