Resource Title search

Text Search of NRICH resource titles

Or find resource begining with:

1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
problem icon

Daisy

Age 7 to 11 Challenge Level:

A game for 2 players. Draw a daisy with at least 5 petals. Shade 1 or 2 petals next to each other. The winner shades the last petal.

problem icon

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.

problem icon

Dam Busters 1

Age 16 to 18 Challenge Level:

At what positions and speeds can the bomb be dropped to destroy the dam?

problem icon

Dam Busters 2

Age 16 to 18 Challenge Level:

Can you work out which of the equations models a bouncing bomb? Will you be able to hit the target?

problem icon

Dancing with Maths

Age 7 to 16

An article for students and teachers on symmetry and square dancing. What do the symmetries of the square have to do with a dos-e-dos or a swing? Find out more?

problem icon

Dangerous Driver?

Age 16 to 18 Challenge Level:

Was it possible that this dangerous driving penalty was issued in error?

problem icon

Daniel's Star

Age 11 to 14 Short Challenge Level:

A solid 'star' shape is created. How many faces does it have?

problem icon

Dart Target

Age 7 to 11 Challenge Level:

This task, written for the National Young Mathematicians' Award 2016, invites you to explore the different combinations of scores that you might get on these dart boards.

problem icon

Darts and Kites

Age 14 to 16 Challenge Level:

Explore the geometry of these dart and kite shapes!

problem icon

Data and Statistics

Age 11 to 18 Challenge Level:

These problems are designed to help Stage 3, 4 and 5 students to handle data and work with statistics.

problem icon

Data Chunks

Age 14 to 16 Challenge Level:

Data is sent in chunks of two different sizes - a yellow chunk has 5 characters and a blue chunk has 9 characters. A data slot of size 31 cannot be exactly filled with a combination of yellow and. . . .

problem icon

Data Handling

The Data Handling collection of STEM resources

problem icon

Data Matching

Age 14 to 18 Challenge Level:

Use your skill and judgement to match the sets of random data.

problem icon

Data Shapes

Age 5 to 7 Challenge Level:

Sara and Will were sorting some pictures of shapes on cards. "I'll collect the circles," said Sara. "I'll take the red ones," answered Will. Can you see any cards they would both want?

problem icon

Dating Made Easier

Age 14 to 16 Challenge Level:

If a sum invested gains 10% each year how long before it has doubled its value?

problem icon

David and Goliath

Age 14 to 18 Challenge Level:

Does weight confer an advantage to shot putters?

problem icon

Day of the Triffids

Age 14 to 16 Short Challenge Level:

Jasmine buys three different types of plant. How many triffids did she buy?

problem icon

Day Out

Age 14 to 16 Short Challenge Level:

Chris cycled faster than expected. Can you work out his average speed?

problem icon

Days and Dates

Age 11 to 14 Challenge Level:

Investigate how you can work out what day of the week your birthday will be on next year, and the year after...

problem icon

Dean's Mountain

Age 11 to 14 Short Challenge Level:

Dean runs down the mountain at 12 km per hour. How long does it take him to run down the mountain?

problem icon

Dear Zoo

Age 3 to 5 Challenge Level:

problem icon

Debasing the Coinage

Age 11 to 14 Short Challenge Level:

How much lighter will £5 worth of 5p's be with these new lighter coins?

problem icon

Debt Race

Age 16 to 18 Challenge Level:

Who will be the first investor to pay off their debt?

problem icon

Debt Recovery

Age 11 to 14 Short Challenge Level:

Tony and Tina can't work out which of them owes what to the other. Can you?

problem icon

Decathlon: the Art of Scoring Points

Age 14 to 18

How do decisions about scoring affect who wins a combined event such as the decathlon?

problem icon

Decimal Clock

Age 11 to 14 Short Challenge Level:

A decimal clock is started at midnight. What time would it show at 6 o'clock in the morning?

problem icon

Decimal Time

Age 11 to 14 Challenge Level:

Use the clocks to investigate French decimal time in this problem. Can you see how this time system worked?

problem icon

Decimal Time Poster

Age 7 to 11 Challenge Level:

Decimal Time - March 2006

problem icon

Decision Curriculum Mapping

Age 16 to 18 Challenge Level:

The A-level Decision Curriculum Mapping Pages

problem icon

Decision Resources

Age 16 to 18

A selection of resources suitable for A-level Decision mathematics

problem icon

Decoding Transformations

Age 11 to 14 Challenge Level:

See the effects of some combined transformations on a shape. Can you describe what the individual transformations do?

problem icon

Deep Roots

Age 14 to 16 Challenge Level:

Find integer solutions to: $\sqrt{a+b\sqrt{x}} + \sqrt{c+d.\sqrt{x}}=1$

problem icon

Defined Distances

Age 11 to 14 Short Challenge Level:

Mark writes four points on a line at different lengths. What is the distance between the two points furthest apart?

problem icon

Degree Ceremony

Age 16 to 18 Challenge Level:

What does Pythagoras' Theorem tell you about these angles: 90°, (45+x)° and (45-x)° in a triangle?

problem icon

Delia's Routes

Age 7 to 11 Challenge Level:

A little mouse called Delia lives in a hole in the bottom of a tree.....How many days will it be before Delia has to take the same route again?

problem icon

Descending Angles

Age 11 to 14 Short Challenge Level:

Given four of the angles in two triangles, can you find the smallest angle overall?

problem icon

Descending Deal

Age 14 to 16 Short Challenge Level:

Four cards from a set numbered 1-36 are dealt. What is the probability that they are dealt in order?

problem icon

Design

The Design collection of STEM resources

problem icon

Design Technology

Age 11 to 16

The Design Technology collection of STEM resources.

problem icon

Design Technology - Classroom Problems

Age 11 to 16 Challenge Level:

A list of stemNRICH Living World problems with teacher support notes.

problem icon

Design Your Circuit

Age 11 to 18 Challenge Level:

Design your own circuit.

problem icon

Designer Maths

Age 11 to 16

Design is mathematical! Find out more with these resources.

problem icon

Designing a Polynomial

Age 16 to 18 Challenge Level:

Can you find a polynomial function whose first derivative is equal to the function?

problem icon

Designing Table Mats

Age 11 to 16 Challenge Level:

Formulate and investigate a simple mathematical model for the design of a table mat.

problem icon

Developing a Classroom Culture That Supports a Problem-solving Approach to Mathematics

Age 5 to 11

This article offers you practical ways to investigate aspects of your classroom culture.

problem icon

Developing a Framework for Mathematical Enrichment

This paper considers the key aspects of mathematics enrichment and how the content and design of trails (as well as the NRICH site itself) has been influenced by, and built upon, these philosophies.

problem icon

Developing Able Young Mathematicians

Age 5 to 11

These activities are particularly good for challenging high-attaining primary children.

problem icon

Developing Excellence in Problem Solving with Young Learners

Age 5 to 11

Becoming confident and competent as a problem solver is a complex process that requires a range of skills and experience. In this article, Jennie suggests that we can support this process in three. . . .