number systems

Introduces the concept of expanded notation by providing facts about dinosaurs and the periods in which they walked the earth millions of years ago.

Simple text and photographs provide an introduction to ordinal numbers.

Teaches the concept of place value, following a young girl as she studies the numbers on road signs during a car trip to her grandma's house.

Teaches young readers how temperature is measured by using numbers.

Explains in simple terms the principles of a base five number system.

Discusses the development of numbers and systems of counting to answer the question "How many?".

Presents an introduction to Roman numerals, and traces the history and development of the Hindu-Arabic numerals used throughout the modern world.

Explains the math concept of expanded notation, and uses expanded notation to plan an imaginary trip around the world.

Presents a children's book for early readers that teaches basic math concepts by sorting out socks.

Introduces different systems of counting including the Egyptian base ten, the Babylonian base sixty, the Hindu system using three symbols, and the abacus and computer systems.