Decimal squares are used as a visual model for the part-to-whole concept of decimals and for illustrating decimal equality, inequality, place value, and estimation. Just for Fun: Decimal Bingo and Place Value Game

The operations of addition, subtraction, multiplication, and division for decimals are illustrated using the Decimal Squares model. Just for Fun: Decimal Squares Blackjack, Greatest Quotient

A 10 by 10 grid is used to introduce the concept of percent and to illustrate and solve various percent problems. The base-ten pieces from the Manipulative Kit are used as a physical model in this activity set. Just for Fun: Game of Interest

Geoboards and rectangular dot paper are used to represent figures whose sides and perimeters have lengths that are irrational numbers. The meaning of square root is introduced using squares on the geoboard, and students are led to discover the Pythagorean Theorem. Just for Fun: Golden Rectangles

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Play against a friend or against the computer, but to win at this game you must be able to create the larger decimal from given random digits.

In This Chapter

Decimals: Rational and Irrational Numbers
	Classroom Readings Interactive Math Applet Decimal Squares Model Bibliography Operations with Decimal Squares Bibliography A Model for Introducing Percent Bibliography Irrational Numbers on the Geoboard Bibliography