Resources tagged with Rational and irrational numbers similar to Rationals Between...:
Other tags that relate to Rationals Between...
Powers & roots. Mathematical reasoning & proof. Fractions. Manipulating algebraic expressions/formulae. Proof by contradiction. Graphs. Diophantine equations. Inequality/inequalities. Surds. Rational and irrational numbers.There are 10 results
Broad Topics > Numbers and the Number System > Rational and irrational numbers
Rationals Between...
Stage: 4 Challenge Level: 
What fractions can you find between the square roots of 65 and 67?
An Introduction to Proof by Contradiction
Stage: 4 and 5
An introduction to proof by contradiction, a powerful method of mathematical proof.
The Square Hole
Stage: 4 Challenge Level:
If the yellow equilateral triangle is taken as the unit for area, what size is the hole ?
The Dangerous Ratio
Stage: 3
This article for pupils and teachers looks at a number that even the great mathematician, Pythagoras, found terrifying.
Equal Equilateral Triangles
Stage: 4 Challenge Level:
Using the interactivity, can you make a regular hexagon from yellow triangles the same size as a regular hexagon made from green triangles ?
What Are Numbers?
Stage: 2, 3, 4 and 5
Ranging from kindergarten mathematics to the fringe of research this informal article paints the big picture of number in a non technical way suitable for primary teachers and older students.
All Is Number
Stage: 2 and 3
Read all about Pythagoras' mathematical discoveries in this article written for students.
Making Rectangles, Making Squares
Stage: 3 Challenge Level:
How many differently shaped rectangles can you build using these equilateral and isosceles triangles? Can you make a square?
Repetitiously
Stage: 3 Challenge Level:
The number 2.525252525252.... can be written as a fraction. What is the sum of the denominator and numerator?
NRICH is part of the family of activities in the Millennium Mathematics Project.