Go Math Science

by Dr. Osama M. Khaled — published Jun 06, 2024 — last modified Jul 13, 2024 12:57 PM — filed under: Year 9

The periodic table sorts the elements by chemical properties and are listed horizontally in order by atomic number.

Located in Physics / Atoms and Molecules

Calculate commissions and commission rates

by Dr. Osama M. Khaled — published Dec 13, 2024 — last modified May 12, 2025 06:14 AM — filed under: Year 7, Year 8, Year 9

Instead of working for a salary or getting paid at an hourly rate,many salespeople are paid on commission.They earn a certain percent of the total dollar ...

Located in Mathematics / … / Percent / Applications of Percent

Basics

by Dr. Osama M. Khaled — published Jun 26, 2022 — last modified Jul 13, 2024 10:31 PM — filed under: Year 9

Test your basic knowledge in computers

Located in Computing / Hardware / Introduction

Definitions

by Dr. Osama M. Khaled — published Jun 25, 2022 — last modified Jul 13, 2024 10:32 PM — filed under: Year 9

A quiz in basic definitions of computer hardware

Located in Computing / Hardware / Introduction

History

by Dr. Osama M. Khaled — published Jun 26, 2022 — last modified Jul 13, 2024 10:32 PM — filed under: Year 9

Test your basic knowledge in history of computers

Located in Computing / Hardware / Introduction

History of Algebra

by Dr. Osama M. Khaled — published Jun 04, 2022 — last modified Jul 23, 2025 03:32 AM — filed under: Year 9

Algebra is one of the major branches of mathematics which was established by Muslim Arabs.

Located in Mathematics / Algebra / Basics

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

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

Distributive Property

by Dr. Osama M. Khaled — published May 28, 2023 — last modified Jul 12, 2024 10:06 PM — filed under: Year 8, Year 9

Distributive property is often used to simplify algebraic expressions.

Located in Mathematics / Algebra / Simplifying Algebraic Expressions

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

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