5 resources.
Squares from 1 to 30 and cubes from 1 to 20, with last-digit patterns, mental squaring shortcuts, and how to find square and cube roots of perfect powers.
SI prefixes in circuits, the derived electrical units, checking formulas with units, decibels, dBm and dBW, with worked examples, common mistakes and practice questions.
Area and perimeter formulas for rectangles, squares, circles, sectors, triangles (including Heron's formula) and regular pentagons, with worked examples and common mistakes.
Surface area and volume formulas for the cuboid, cube, sphere, hemisphere, cylinder, cone and frustum, with worked examples including a combined solid, and common mistakes.
What a radian measures, converting degrees, minutes and radians, a standard-angle table, and arc length and sector area in radians, with worked examples.