Other tags that relate to The Best Square
Logic. Programming. STEM - General. Algorithms. Logo. Networks/Graph Theory. Combinatorics. Mathematical modelling. Practical Activity. Codes and cryptography.There are 22 results
Broad Topics > Patterns, Sequences and Structure > Iteration
First Forward Into Logo 10: Count up - Count Down
Age 11 to 18 Challenge Level:
What happens when a procedure calls itself?
Route to Root
Age 16 to 18 Challenge Level:
A sequence of numbers x1, x2, x3, ... starts with x1 = 2, and, if you know any term xn, you can find the next term xn+1 using the formula: xn+1 = (xn + 3/xn)/2 . Calculate the first six terms of this. . . .
First Forward Into Logo 1: Square Five
Age 7 to 16 Challenge Level:
A Short introduction to using Logo. This is the first in a twelve part series.
Difference Dynamics
Age 14 to 18 Challenge Level:
Take three whole numbers. The differences between them give you three new numbers. Find the differences between the new numbers and keep repeating this. What happens?
Stringing it Out
Age 14 to 16 Challenge Level:
Explore the transformations and comment on what you find.
Difference Dynamics Discussion
Age 16 to 18
This article discusses what happens, and why, if you generate chains of sequences getting the next sequence from the differences between the adjacent terms in the sequence before it, eg (7, 2, 8, 3). . . .
Peaches in General
Age 14 to 16 Challenge Level:
It's like 'Peaches Today, Peaches Tomorrow' but interestingly generalized.
Spirostars
Age 16 to 18 Challenge Level:
A spiropath is a sequence of connected line segments end to end taking different directions. The same spiropath is iterated. When does it cycle and when does it go on indefinitely?
Stretching Fractions
Age 14 to 16 Challenge Level:
Imagine a strip with a mark somewhere along it. Fold it in the middle so that the bottom reaches back to the top. Stetch it out to match the original length. Now where's the mark?
The Golden Ratio, Fibonacci Numbers and Continued Fractions.
Age 14 to 16
An iterative method for finding the value of the Golden Ratio with explanations of how this involves the ratios of Fibonacci numbers and continued fractions.
Slippage
Age 14 to 16 Challenge Level:
A ladder 3m long rests against a wall with one end a short distance from its base. Between the wall and the base of a ladder is a garden storage box 1m tall and 1m high. What is the maximum distance. . . .
Quorum-sensing
Age 16 to 18 Short Challenge Level:
This problem explores the biology behind Rudolph's glowing red nose.
Dalmatians
Age 14 to 18 Challenge Level:
Investigate the sequences obtained by starting with any positive 2 digit number (10a+b) and repeatedly using the rule 10a+b maps to 10b-a to get the next number in the sequence.
Triangle Incircle Iteration
Age 14 to 16 Challenge Level:
Keep constructing triangles in the incircle of the previous triangle. What happens?
Climbing Powers
Age 16 to 18 Challenge Level:
$2\wedge 3\wedge 4$ could be $(2^3)^4$ or $2^{(3^4)}$. Does it make any difference? For both definitions, which is bigger: $r\wedge r\wedge r\wedge r\dots$ where the powers of $r$ go on for ever, or. . . .
Loopy
Age 14 to 16 Challenge Level:
Investigate sequences given by $a_n = \frac{1+a_{n-1}}{a_{n-2}}$ for different choices of the first two terms. Make a conjecture about the behaviour of these sequences. Can you prove your conjecture?
Converging Means
Age 14 to 16 Challenge Level:
Take any two positive numbers. Calculate the arithmetic and geometric means. Repeat the calculations to generate a sequence of arithmetic means and geometric means. Make a note of what happens to the. . . .
Ford Circles
Age 16 to 18 Challenge Level:
Can you find the link between these beautiful circle patterns and Farey Sequences?
Infinite Continued Fractions
Age 16 to 18
In this article we are going to look at infinite continued fractions - continued fractions that do not terminate.
Archimedes Numerical Roots
Age 16 to 18 Challenge Level:
How did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?
Rain or Shine
Age 16 to 18 Challenge Level:
Predict future weather using the probability that tomorrow is wet given today is wet and the probability that tomorrow is wet given that today is dry.
V-P Cycles
Age 16 to 18 Challenge Level:
Form a sequence of vectors by multiplying each vector (using vector products) by a constant vector to get the next one in the seuence(like a GP). What happens?
NRICH is part of the family of activities in the Millennium Mathematics Project.