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  1. Multiply exponential expressions
    by Dr. Osama M. Khaled — published Dec 17, 2023 — last modified Jul 12, 2024 10:19 PM — filed under: Year 9
    Multiply exponential expressions that have like bases
    Located in Mathematics / Algebra / Multiplication Rules for Exponents
  2. Names and Symbols of Common Elements
    by Dr. Osama M. Khaled — published Sep 18, 2022 — last modified Jul 13, 2024 10:06 PM — filed under: Year 9
    Test your knowledge and memory identifying symbols of comment elements
    Located in Chemistry / Atoms, Molecules, and Ions
  3. Plant parts
    by Dr. Osama M. Khaled — published Oct 15, 2021 — last modified Jul 13, 2024 10:50 PM — filed under: Year 9
    Do you know plant parts? Take this quiz and refresh your knowledge
    Located in Biology / Botany
  4. Points, lines, and planes
    by Dr. Osama M. Khaled — published May 27, 2022 — last modified Jul 13, 2024 10:44 PM — filed under: Year 9
    Geometry is based on three undefined words: point, line, and plane
    Located in Mathematics / Geometry / Fundamentals
  5. Quadratic Expressions - Expanding
    by Dr. Osama M. Khaled — published Nov 20, 2020 — last modified Jul 12, 2024 10:22 PM — filed under: Year 9
    Expanding quadratic expressions is very important. It should be very easy as well. Do not be scared. Take the quiz and try it yourself
    Located in Mathematics / Algebra
  6. Quadratic Expressions - Expanding
    by Mohamed Osama — published Dec 17, 2020 — last modified Jun 06, 2025 09:26 AM — filed under: Year 9
    Another quiz showing how to do equation expansion
    Located in Mathematics / Algebra
  7. Raise exponential expressions to a power
    by Dr. Osama M. Khaled — published Jan 11, 2024 — last modified Jul 12, 2024 10:20 PM — filed under: Year 9
    To raise an exponential expression to a power, keep the base and multiply the exponents
    Located in Mathematics / Algebra / Multiplication Rules for Exponents
  8. Simplify products
    by Dr. Osama M. Khaled — published May 25, 2023 — last modified Jul 12, 2024 10:24 PM — filed under: Year 9
    The commutative and associative properties of multiplication can be used to simplify certain products
    Located in Mathematics / Algebra / Simplifying Algebraic Expressions
  9. Specific Gravity
    by Dr. Osama M. Khaled — published Aug 14, 2024 — last modified Aug 17, 2024 04:20 AM — filed under: Year 8, Year 9, Year 10
    The specific gravity of a substance is often listed in tables instead of either mass density or weight density
    Located in Physics / Solids
  10. Stemplots
    by Dr. Osama M. Khaled — published Aug 13, 2023 — last modified Jul 13, 2024 09:49 PM — filed under: Year 9 Located in Mathematics / Statistics / Data Distributions
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