Go Math Science

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

Pressure in gases

by Dr. Osama M. Khaled — published May 19, 2026 — last modified May 19, 2026 07:56 PM — filed under: Year 9

Gases are more easily compressed than liquids. But if there is so much empty space between molecules, why is any effort at all required to compress them? Why ...

Located in Physics / Liquids and Gases

Professional Software Development

by Dr. Osama M. Khaled — published May 27, 2026 — last modified May 27, 2026 12:15 PM — filed under: Year 9, Year 10, Undergraduate

This quiz evaluates students’ understanding of the principles, practices, and characteristics of professional software development through realistic, ...

Located in Computing / Software Engineering / Get Started

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

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