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295 courses

Reflections on Coordinate Grids

A reflection is a type of transformation that flips a shape over a line, known as the mirror line. Every point in the original shape has a corresponding point in the reflected...

Open eLMS Created 25/11/2025

Representing 3D Shapes: Plans, Elevations, and Nets

Plans and elevations are fundamental concepts in technical drawing and geometry, representing three-dimensional objects in two dimensions. These 2D drawings provide different...

Open eLMS Created 25/11/2025

Resultant Forces

Welcome to this learning session on Resultant Forces In this course we shall address:Understanding Resultant ForceCalculating 1D Resultant ForceBalanced and Unbalanced ForcesR...

Jesrael Created 01/04/2026

Reverse Percentages

This course introduces the concept of reverse percentages, a crucial skill in mathematics for finding original values after a percentage change. Learners will master the use o...

Open eLMS 5.0(2) Created 14/11/2025

Reversible Reactions

Reversible reactions are chemical reactions that can proceed in both the forward and reverse directions simultaneously. Unlike irreversible reactions, where reactants form pro...

Jesrael Created 23/03/2026

Right Triangle Trigonometry: Sides and Applications

Trigonometric ratios are powerful tools used to find unknown side lengths in right-angled triangles. To apply these ratios, you must know the length of at least one side and t...

Open eLMS Created 25/11/2025

River Dee Landscapes: Formation and Change

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Open eLMS Created 07/11/2025

River Landscapes: Erosion, Transport, and Deposition

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Open eLMS Created 07/11/2025

River Valley Changes: Upper to Lower Course

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Open eLMS Created 07/11/2025

Rocks and the Process of Weathering

This course provides a comprehensive study of rocks, covering their characteristics, formation, and economic importance. It explores the three main types of rocks: igneous, se...

Open eLMS Created 02/09/2025

Rounding Numbers

This course provides a comprehensive guide to rounding numbers, covering essential techniques such as rounding to specific place values and significant figures. It delves into...

Open eLMS 5.0(1) Created 11/08/2025

Satellites and Orbits

Welcome to this learning session on Satellites and Orbits In this course we shall address:Natural and Artificial SatellitesUnderstanding Circular OrbitsOrbital Mechanics: Grav...

Open eLMS Created 01/04/2026