Foundations
15 videos
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Algebra - Algebra Foundations: What You Need to Know
Learn the six essential pre-algebra skills needed to build a strong foundation before tackling algebra, from negative numbers to basic geometry.
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Algebra - Negative Numbers on the Number Line
Learn what negative numbers mean using a number line and how opposites work. Understand that opposites are the same distance from zero in different directions.
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Algebra - Adding and Subtracting Negative Numbers
Learn how negative numbers work on a number line, including adding negatives and why subtracting a negative equals adding a positive.
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Algebra - Solving: Subtracting a Negative Number
Learn how subtracting a negative number works using a number line example. Discover why two negatives become a positive in math.
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Algebra - Multiplying and Dividing Negative Numbers
Learn how to multiply and divide negative numbers using sign rules. Same signs give positive results, different signs give negative results.
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Algebra - Absolute Value: Distance from Zero
Learn about absolute value: how it measures distance from zero on a number line and why it's always zero or positive, with clear examples using positive and negative numbers.
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Algebra - Intro to Exponents
Learn how exponents work as repeated multiplication, understand base and exponent notation, and see how exponential growth differs dramatically from simple multiplication.
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Algebra - Exponents: Zero Power, First Power, and Negative Bases
Learn why any non-zero number to the zero power equals 1, and how negative bases behave with even and odd exponents.
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Algebra - Intro to Square Roots
Learn what square roots are and how they reverse the squaring process. Understand how to find square roots of perfect squares like 9, 16, and 25.
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Algebra - Simplifying Square Roots Step by Step
Learn how to simplify square roots by factoring out perfect squares, demonstrated with the example of √72 = 6√2 using the property √(a×b) = √a × √b.
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Algebra - Order of Operations (PEMDAS)
Learn why order of operations (PEMDAS) is essential in math and how to correctly solve expressions like 3 + 2 × 4 to get one right answer.
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Algebra - Solving: Order of Operations with Negatives
Learn how to solve order of operations problems with negative numbers and exponents using PEMDAS, including key rules about parentheses and negatives.
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Algebra - Converting Between Fractions, Decimals, and Percents
Learn how to convert between fractions, decimals, and percents. This video explains the simple steps to switch between these three equivalent forms of the same value.
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Algebra - Solving Percent Word Problems
Learn how to convert a test score (18 out of 24) into a percentage by simplifying fractions and converting to a denominator of 100 to get 75%.
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Algebra - Area Formulas: Triangles and Circles
Learn how to calculate the area of triangles and circles using formulas. Covers triangle area (½ × base × height) and circle area (π × r²) with practical examples.