By Joan A. Cotter, Ph.D.

The child works with percents and decimals as well as fractions in the fourth grade. She learns short division for dividing by single digits. Some algebraic concepts are introduced, including coordinate systems. In geometry she studies classification of triangles and polygons, rotational symmetry, angle measurement, and 3-dimensional figures. Level E Worksheets are needed for the child.

Manipulatives for Level E may be purchased as a set (includes those needed to complete Levels A to E) or separately at www.alabacus.com

Required Manipulatives: RightStart Math Transition Lessons, Math Card Game Book, Al Abacus Junior, Abacus Tiles, Cards (6 special decks for games), Basic Drawing Board Geometry Set, Colored Tiles, Casio Calculator SL-450, 4-in-1 Ruler, Folding Meter Stick, Angle Measurer/Goniometer, and 2 Laminated Fraction Charts.