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Introductory concepts in Biology - 2

by Dr. Osama M. Khaled — published Oct 27, 2021 — last modified Jul 13, 2024 10:49 PM — filed under: Year 9 Located in Biology / Basics

Introductory concepts in Biology - 3

by Dr. Osama M. Khaled — published Oct 27, 2021 — last modified Jul 13, 2024 10:48 PM — filed under: Year 9 Located in Biology / Basics

Kepler's Laws

by Dr. Osama M. Khaled — published Mar 27, 2024 — last modified Jul 13, 2024 12:47 PM — filed under: Year 9

About 50 years before Newton formulated the law of gravity, Johanne Kepler (1571-1630) had found some rules that could be used to calculate the orbits of the ...

Located in Physics / Gravity

Lines, segments and rays

by Dr. Osama M. Khaled — published May 28, 2022 — last modified Jul 13, 2024 10:43 PM — filed under: Year 9

Answer some questions about lines, segments and rays

Located in Mathematics / Geometry / Fundamentals

Matter Basics

by Dr. Osama M. Khaled — published Nov 02, 2021 — last modified Jul 13, 2024 10:48 PM — filed under: Year 9

Test your knowledge about some fundamental concepts in matter

Located in Chemistry / Introduction

Molecules in gases

by Dr. Osama M. Khaled — published May 19, 2026 — last modified May 19, 2026 08:32 AM — filed under: Year 9

The molecules of the gas are not bound together by forces at all, but fly about freely in space

Located in Physics / Liquids and Gases

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

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

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

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

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