Resources tagged with: Video

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There are 41 results

Broad Topics > Physical and Digital Manipulatives > Video

Speedy Summations

Age 16 to 18 Challenge Level:

Watch the video to see how to add together an arithmetic sequence of numbers efficiently.

Summing Geometric Progressions

Age 14 to 18 Challenge Level:

Watch the video to see how to sum the sequence. Can you adapt the method to sum other sequences?

The ELISA Test

Age 14 to 18 Challenge Level:

In 1% of cases, an HIV test gives a positive result for someone who is HIV negative. How likely is it that someone who tests positive has HIV?

Vanishing Roots

Age 14 to 18

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

Double Trouble

Age 14 to 16 Challenge Level:

Simple additions can lead to intriguing results...

Sketching Graphs - Transformations

Age 16 to 18 Challenge Level:

If you can sketch y=f(x), there are several related functions you can also sketch...

How to Sketch Graphs

Age 16 to 18

A few tips and tricks to help you when sketching graphs

Tasks Promoting Inquiry

Age 11 to 18 Challenge Level:

Video for teachers of a talk given by Dan Meyer in Cambridge in March 2013.

Probability in Court

Age 14 to 18 Challenge Level:

When you're on trial for murder, it can be crucial that the court understands probability...

Slick Summing

Age 14 to 16 Challenge Level:

Watch the video to see how Charlie works out the sum. Can you adapt his method?

Kingsfield School - Building on Rich Starting Points

Age 5 to 18

Alf and Tracy explain how the Kingsfield School maths department use common tasks to encourage all students to think mathematically about key areas in the curriculum.

Impossible Square?

Age 16 to 18 Challenge Level:

Can you make a square from these triangles?

Impossible Triangles?

Age 16 to 18 Challenge Level:

Which of these triangular jigsaws are impossible to finish?

Symmetric Tangles

Age 14 to 16

The tangles created by the twists and turns of the Conway rope trick are surprisingly symmetrical. Here's why!

Power Countdown

Age 14 to 16 Challenge Level:

In this twist on the well-known Countdown numbers game, use your knowledge of Powers and Roots to make a target.

Sorted

Age 14 to 18 Challenge Level:

How can you quickly sort a suit of cards in order from Ace to King?

A Brief Introduction to Complex Numbers

Age 14 to 18 Challenge Level:

In this problem, we define complex numbers and invite you to explore what happens when you add and multiply them.

James's Code Challenge

Age 7 to 18 Challenge Level:

The Enigma Project's James Grime has created a video code challenge. Watch it here!

Angle Trisection

Age 14 to 16 Challenge Level:

It is impossible to trisect an angle using only ruler and compasses but it can be done using a carpenter's square.

Beelines

Age 14 to 16 Challenge Level:

Is there a relationship between the coordinates of the endpoints of a line and the number of grid squares it crosses?

Air Nets

Age 7 to 18 Challenge Level:

Can you visualise whether these nets fold up into 3D shapes? Watch the videos each time to see if you were correct.

Factorising with Multilink

Age 14 to 16 Challenge Level:

Can you find out what is special about the dimensions of rectangles you can make with squares, sticks and units?

How Risky Is My Diet?

Age 11 to 16 Challenge Level:

Newspapers said that eating a bacon sandwich every day raises the risk of bowel cancer by 20%. Should you be concerned?

Take Three from Five

Age 14 to 16 Challenge Level:

Caroline and James pick sets of five numbers. Charlie chooses three of them that add together to make a multiple of three. Can they stop him?

Shopping Basket

Age 11 to 16 Challenge Level:

The items in the shopping basket add and multiply to give the same amount. What could their prices be?

Cyclic Quad Jigsaw

Age 14 to 16 Challenge Level:

A picture is made by joining five small quadrilaterals together to make a large quadrilateral. Is it possible to draw a similar picture if all the small quadrilaterals are cyclic?

The Invertible Trefoil

Age 14 to 16 Challenge Level:

When is a knot invertible ?

Galley Division

Age 14 to 16 Challenge Level:

Can you explain how Galley Division works?

Drawing Squares

Age 11 to 16

Take a look at the video showing squares drawn on dotty grids...

Statins and Risk

Age 14 to 16 Challenge Level:

"Statins cut the risks of heart attacks and strokes by 40%"
Should the Professor take statins? Can you help him decide?

Drawing Rhombuses

Age 11 to 16

Take a look at the video showing rhombuses drawn on dotty grids...

Areas on a Grid

Age 11 to 16

Take a look at the video showing areas of different shapes on dotty grids...

Squares from Diagonals

Age 11 to 16

Take a look at the video showing squares and their diagonals...

Introductory Video

Age 11 to 16

An introductory video to the Probability and Evidence collection

Rhombuses from Diagonals

Age 11 to 16

Take a look at the video showing rhombuses and their diagonals...

Painted Cube

Age 14 to 16 Challenge Level:

Imagine a large cube made from small red cubes being dropped into a pot of yellow paint. How many of the small cubes will have yellow paint on their faces?

Whirlyball

Age 16 to 18 Challenge Level:

Whirl a conker around in a horizontal circle on a piece of string. What is the smallest angular speed with which it can whirl?

The Best Card Trick?

Age 11 to 16 Challenge Level:

Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?

Modular Origami Polyhedra

Age 7 to 16 Challenge Level:

These models have appeared around the Centre for Mathematical Sciences. Perhaps you would like to try to make some similar models of your own.

Turning the Place Over

Age 11 to 18 Challenge Level:

As part of Liverpool08 European Capital of Culture there were a huge number of events and displays. One of the art installations was called "Turning the Place Over". Can you find our how it works?

Helicopters

Age 7 to 16 Challenge Level:

Design and test a paper helicopter. What is the best design?