Rational and Irrational Numbers 2 Projector Resources Rational

Rational and Irrational Numbers 2 Projector Resources Rational and Irrational Numbers 2

Poster with Headings Projector Resources Rational and Irrational Numbers 2 P-1

Instructions for Always, Sometimes or Never True 1. Choose a statement. • Try out different numbers. • Write your examples on the statement card. 2. Conjecture: decide whether you think each statement is always, sometimes or never true. • Always true: explain why on the poster. • Sometimes true: write an example for which it is true and an example for which it is false. • Never true: explain why on the poster. Projector Resources Rational and Irrational Numbers 2 P-2

Always, Sometimes or Never True? The sum of a rational number and an irrational number is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-3

Always, Sometimes or Never True? The circumference of a circle is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-4

Always, Sometimes or Never True? The diagonal of a square is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-5

Always, Sometimes or Never True? The sum of two rational numbers is rational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-6

Always, Sometimes or Never True? The product of a rational number and an irrational number is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-7

Always, Sometimes or Never True? The sum of two irrational numbers is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-8

Always, Sometimes or Never True? The product of two rational numbers is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-9

Always, Sometimes or Never True? The product of two irrational numbers is irrational. True for: Projector Resources False for: Rational and Irrational Numbers 2 P-10