Kirkby, David

Introduces elementary geometric concepts along with simple activities and calculations.

Explores mathematical concepts through activities and calculations.

Explores such concepts as mathematical shape and symmetry.

Presents simple mathematical concepts in games or puzzles using dominoes, coins, straws, mazes, palindromes, solitaire, tangrams, and others.

Introduces concepts and suggests simple activities for exploring elementary mathematics.

Presents simple activities to demonstrate the concept of sorting, using categories like color, shape, and function.

Uses simple activities to explain shapes, including circles, squares, rectangles, spheres, pyramids, and cones.

Introduces different types of patterns and the concept of symmetry with simple activities.

Introduces and suggests simple activities to explore elementary mathematical concepts.

A simple introduction to the mathematical concepts of length, weight, quantity, and time, with some easy activities included.