Search results 3797 items matching your search terms. Filter the results Item type Select All/None Collection File Folder Image Link Movie Page Question Quiz Quiz History New items since Yesterday Last week Last month Ever Sort by relevance date (newest first) alphabetically US Cities by Dr. Osama M. Khaled — published Sep 15, 2023 — last modified May 25, 2025 10:21 PM Located in Mathematics / … / An Introduction to the Whole Numbers / Round whole numbers Use a protractor to measure angles by Dr. Osama M. Khaled — published Jan 14, 2023 — last modified Jul 13, 2024 10:02 PM — filed under: Year 7 How to use protractor to measure angles Located in Mathematics / Geometry / Fundamentals Use congruence properties to prove that two triangles are congruent by Dr. Osama M. Khaled — published Nov 29, 2025 — last modified Dec 06, 2025 11:29 PM — filed under: Year 8 Sometimes it is possible to conclude that two triangles are congruent without having to show that three pairs of corresponding angles are congruent and three ... Located in Mathematics / Geometry / Congruent Triangles and Similar Triangles Use estimation to solve percent application problems by Dr. Osama M. Khaled — published May 15, 2025 — last modified May 15, 2025 03:05 AM Sometimes we must approximate the percent to estimate an answer Located in Mathematics / … / Percent / Estimation with Percent Use front-end rounding to estimate the sum by Dr. Osama M. Khaled — published Jun 09, 2025 — last modified Jun 09, 2025 09:12 PM Located in Mathematics / … / Adding Whole Numbers / Estimate sums of whole numbers Use front-end rounding to estimate the sum by Dr. Osama M. Khaled — published Jun 03, 2025 — last modified Jun 03, 2025 12:55 AM Located in Mathematics / … / Adding Whole Numbers / Estimate sums of whole numbers Use inequality symbols to compare integers by Dr. Osama M. Khaled — published Dec 13, 2025 — last modified Dec 14, 2025 04:14 AM — filed under: Year 7 the symbol < means “is less than” and > that means “is greater than Located in Mathematics / … / Integers / An Introduction to the Integers Use more than one property of equality to solve equations by Dr. Osama M. Khaled — published Nov 07, 2023 — last modified Jul 12, 2024 10:16 PM — filed under: Year 8 More complicated equations may require using more than one property to solve it. Located in Mathematics / Algebra / Solving Equations with Equality Use properties of addition to add whole numbers by Dr. Osama M. Khaled — published May 28, 2025 — last modified Jun 02, 2025 07:11 AM — filed under: Year 2, Year 3 Two whole numbers can be added in either order because the result is the same. This is called commutative property of addition. There are other properties ... Located in Mathematics / … / Whole Numbers / Adding Whole Numbers Use properties of parallel lines cut by a transversal to find unknown angle measures by Dr. Osama M. Khaled — published Jan 28, 2024 — last modified Jul 13, 2024 01:06 PM — filed under: Year 10 Lines that are cut by a transversal may or may not be parallel Located in Mathematics / Geometry / Parallel and Perpendicular Lines < Previous 10 items 1 ... 302 303 304 305 306 307 308 ... 380 Next 10 items > Subscribe to an always-updated RSS feed.
