# Resource Title search

### Kangaroo Hops

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

Weekly Problem 11 - 2011
Kanga hops ten times in one of four directions. At how many different points can he end up?

### Kangaroo Subtraction

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

Can you solve this 'KANGAROO' alphanumeric subtraction?

### Kate's Date

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

When Kate ate a giant date, the average weight of the dates decreased. What was the weight of the date that Kate ate?

### Königsberg

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

Can you cross each of the seven bridges that join the north and south of the river to the two islands, once and once only, without retracing your steps?

### Keep it Simple

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

Can all unit fractions be written as the sum of two unit fractions?

### Keep Your Distance

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

Can you mark 4 points on a flat surface so that there are only two different distances between them?

### Keep Your Distance Poster

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

Keep Your Distance Poster - April 2008

### Keep Your Momentum Going

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

A look at a fluid mechanics technique called the Steady Flow Momentum Equation.

### Keeping it Safe and Quiet

##### Age 14 to 18

Simon Singh describes PKC, its origins, and why the science of code making and breaking is such a secret occupation.

### Kept Apart

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

The squares of this grid contain one of the letters P, Q, R and S. Can you complete this square so that touching squares do not contain the same letter? How many possibilities are there?

### Key Differences Between Maths and SET

##### Age 11 to 16

6: Introducing and developing STEM in the classroom.

### Key Elements of Good STEM Practice

##### Age 11 to 16

1: Introducing and developing STEM in the classroom.

### Key National Curriculum Content

##### Age 5 to 11

On this page, you will find features linked to different aspects of the 2014 National Curriculum, including new curriculum content.

### Key Obstacles Hindering Cross-curricular Teaching

##### Age 11 to 16

4: Introducing and developing STEM in the classroom.

### Khun Phaen Escapes to Freedom

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

Slide the pieces to move Khun Phaen past all the guards into the position on the right from which he can escape to freedom.

### Kids

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

Find the numbers in this sum

### Kinematics - Advanced

##### Age 16 to 18

Resources to support an advanced module of kinematics (M3)

### Kinematics - Intermediate

##### Age 16 to 18

Resources to support an intermediate module of kinematics (M2)

### Kinematics - Introductory

##### Age 16 to 18

Resources to support an introductory module of kinematics (M1)

### King's Group Professional Development Weekend

Resources to accompany Charlie's workshop at the King's Group Professional Development Weekend in Madrid.

### 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.

### Kissing

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

Two perpendicular lines are tangential to two identical circles that touch. What is the largest circle that can be placed in between the two lines and the two circles and how would you construct it?

### Kissing Triangles

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

Determine the total shaded area of the 'kissing triangles'.

### Kite in a Square

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

Can you make sense of the three methods to work out the area of the kite in the square?

### Knapsack

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

You have worked out a secret code with a friend. Every letter in the alphabet can be represented by a binary value.

### Knight Defeated

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

The knight's move on a chess board is 2 steps in one direction and one step in the other direction. Prove that a knight cannot visit every square on the board once and only (a tour) on a 2 by n board. . . .

### Knight's Swap

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

Swap the stars with the moons, using only knights' moves (as on a chess board). What is the smallest number of moves possible?

### Knights and Knaves

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

Knights always tell the truth. Knaves always lie. Can you catch these knights and knaves out?

### Knights Moving

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

Can you swap the black knights with the white knights in the minimum number of moves?

### Knock-out

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

Before a knockout tournament with 2^n players I pick two players. What is the probability that they have to play against each other at some point in the tournament?

### Knockdown

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

Weekly Problem 51 - 2016
Pegs numbered 1 to 50 are placed in a row. Alternate pegs are knocked down, and this process is repeated. What is the number of the last peg to be knocked down?

### Know Your Powers

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

Given these equations with unknown powers $x$ and $y$, can you work out $xy$?

### Knowing Mathematics

Resources for teachers attending the Knowing Mathematics PD day

### Konigsberg Plus

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

Euler discussed whether or not it was possible to stroll around Koenigsberg crossing each of its seven bridges exactly once. Experiment with different numbers of islands and bridges.

### KS1 Roadshow

##### Age 5 to 7

These hands-on activities are ideally suited to Key Stage 1 children.

### KS2 Roadshow

##### Age 7 to 11

These hands-on activities are ideally suited to Key Stage 2 children.

### KS2 Teacher Playing with Numbers Collection

##### Age 7 to 11

Mult and Div collection