How Math Works

Includes sections on: Numbers -- Proportions -- Algebra -- Statistics -- Measurement -- Shape -- Thinking. Mathematics and science, positive and negative numbers, fractions and decimals, estimating, using powers, number bases, series and sequences, ratios, distances, volume, mass and weight, time, speed, angle, lines, triangles, right angles, trigonometry, shapes, cirles, curves, spirals, symmetry, shapes.