Hewavisenti, Lakshmi

Explains investigating and classifying various geometrical figures, and how to rearrange them to demonstrate mass and volume. Includes games.

Presents activities involving quantity, proportion, length and weight, estimating and approximating with numbers, and graphic representation.

Colorful puzzles and games help readers learn to use functions and formulas for addition, subtraction, multiplication, division, fractions, and data processing.

Puzzles, games, and projects help readers recognize numbers and learn adding, subtracting, and estimating.