Rational and Irrational Numbers 2Projector Resources
Rational and Irrational Numbers 2
Projector Resources
Rational and Irrational Numbers 2Projector Resources
Poster with Headings
P-2
Rational and Irrational Numbers 2Projector Resources
Instructions for Always, Sometimes or Never True
P-3
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.
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The sum of a rational number and an irrational number is irrational.
True for: False for:
P-4
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The circumference of a circle is irrational. True for: False for:
P-5
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The diagonal of a square is irrational. True for: False for:
P-6
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The sum of two rational numbers is rational. True for: False for:
P-7
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The product of a rational number and an irrational number is irrational.
True for: False for:
P-8
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The sum of two irrational numbers is irrational. True for: False for:
P-9
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The product of two rational numbers is irrational.
True for: False for:
P-10
Rational and Irrational Numbers 2Projector Resources
Always, Sometimes or Never True?
The product of two irrational numbers is irrational.
True for: False for:
P-11