# Resource Title search

### 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?

### Vaccination Game

##### Age 11 to 16

This activity encourages students to consider the effect of vaccination on the spread of a disease.

### Valuable Percentages

##### Age 11 to 14 Short Challenge Level:

Weekly Problem 23 - 2010
These numbers have been written as percentages. Can you work out which has the greatest value?

### Vanishing Point

##### Age 14 to 18 Challenge Level:

How can visual patterns be used to prove sums of series?

### Vanishing Roots

##### Age 14 to 18

If $y=x^2-6x+c$, and we vary $c$, what happens to the roots when $c>9$?

### Various Venns

##### Age 7 to 11 Challenge Level:

Use the interactivities to complete these Venn diagrams.

### Vector Gem Collector

##### Age 14 to 18 Challenge Level:

Use vectors to collect as many gems as you can and bring them safely home!

### Vector Journeys

##### Age 14 to 18 Challenge Level:

Charlie likes to go for walks around a square park, while Alison likes to cut across diagonally. Can you find relationships between the vectors they walk along?

### Vector Racer

##### Age 11 to 16 Challenge Level:

The classic vector racing game.

### Vector Walk

##### Age 14 to 18 Challenge Level:

Starting with two basic vector steps, which destinations can you reach on a vector walk?

### Vectors

Working on these problems will help your students develop a better understanding of vectors.

### Vectors

##### Age 11 to 14 Challenge Level:

Working on these problems will help you develop a better understanding of vectors.

### Vectors - Short Problems

A collection of short problems on vectors.

### Vectors in Mechanics

##### Age 16 to 18

Resources to support the teaching and learning of vectors in mechanics

### Vectors Round a Square

##### Age 11 to 16

What is special about the relationships between vectors that define a square?

### Vedic Sutra - All from 9 and Last from 10

##### Age 14 to 16 Challenge Level:

Vedic Sutra is one of many ancient Indian sutras which involves a cross subtraction method. Can you give a good explanation of WHY it works?

### Vegtown Elections

##### Age 14 to 16 Short Challenge Level:

What percentage of people voted for the Broccoli party in the Vegtown election?

### Venn Diagram Fun

##### Age 16 to 18 Short Challenge Level:

Can you create a Venn diagram?

### Venn Diagrams

##### Age 5 to 11 Challenge Level:

Use the interactivities to complete these Venn diagrams.

### Very Average

##### Age 14 to 16 Short Challenge Level:

If each number in this list is the average of the two numbers before it, what is the value of a?

### Very Long Line

##### Age 14 to 16 Short Challenge Level:

If the line on the right were 0.2mm thick, how long would it need to be to cover an area of one square metre?

### Very Old Man

##### Age 16 to 18 Challenge Level:

Is the age of this very old man statistically believable?

### Video Conference - Proof

##### Age 16 to 18 Challenge Level:

Details of the Motivate Video Conference on Proof given on 13th October 2008

### Video List

A list of the video resources available on nrich

### Vienna International School

Resources to accompany Charlie's workshop with teachers.

### Virtual Geoboard

A virtual geoboard that allows you to create shapes by stretching rubber bands between pegs on the board. Allows a variable number of pegs and variable grid geometry and includes a point labeller.

### Visual Proofs

Pictures that tell a story; proofs without words.

### Visualising

##### Age 11 to 14

Work on these problems to improve your visualisation skills.

### Visualising

##### Age 11 to 16

Problems about visualising for use with Stage 3 and 4 students.

### Visualising - Advanced

##### Age 16 to 18

Problems about visualising for use with Stage 5 students.

### Visualising - Short Problems

##### Age 11 to 16

A collection of short Stage 3 and 4 problems on Visualising.

### Visualising - Upper Secondary

##### Age 14 to 18

Develop your skills of visualisation of mathematical objects

### Visualising and Representing Complex Numbers

##### Age 16 to 18 Challenge Level:

What are complex numbers, and how can we represent them?

### Visualising at KS1

##### Age 5 to 7

These lower primary tasks all specifically draw on the use of visualising.

### Visualising at KS2

##### Age 7 to 11

These upper primary tasks all specifically draw on the use of visualising.

### Vital?

##### Age 16 to 18 Challenge Level:

Third challenge cipher

### Volume and Capacity KS2

##### Age 7 to 11

These resources introduce and explore the concepts of volume and capacity.

### Volume of a Pyramid and a Cone

##### Age 11 to 14

These formulae are often quoted, but rarely proved. In this article, we derive the formulae for the volumes of a square-based pyramid and a cone, using relatively simple mathematical concepts.

### Volume of a Pyramid and a Cone - Animations

These are the interactivities for the article 'Volume of a Pyramid and a Cone on NRICH website. They might take a very long time to load on some computers.

### Von Koch Curve

##### Age 16 to 18 Challenge Level:

Make a poster using equilateral triangles with sides 27, 9, 3 and 1 units assembled as stage 3 of the Von Koch fractal. Investigate areas & lengths when you repeat a process infinitely often.