Search by Topic

Resources tagged with Codes and cryptography similar to What Was in the Box?:

Filter by: Content type:
Stage:
Challenge level: Challenge Level:1 Challenge Level:2 Challenge Level:3

There are 10 results

Broad Topics > Applications > Codes and cryptography

problem icon

What Was in the Box?

Stage: 1 Challenge Level: Challenge Level:1

This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box?

problem icon

Some Secret Codes

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Can you follow the rule to decode the messages?

problem icon

Numbered Cars

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

I was looking at the number plate of a car parked outside. Using my special code S208VBJ adds to 65. Can you crack my code and use it to find out what both of these number plates add up to?

problem icon

Unlocking the Case

Stage: 2 Challenge Level: Challenge Level:1

A case is found with a combination lock. There is one clue about the number needed to open the case. Can you find the number and open the case?

problem icon

What's in a Name?

Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2

Here's a very elementary code that requires young children to read a table, and look for similarities and differences.

problem icon

What's Happening?

Stage: 1 Challenge Level: Challenge Level:1

Shapes are added to other shapes. Can you see what is happening? What is the rule?

problem icon

Cracking Codes

Stage: 1 and 2

Jenny Murray describes how she developed her interest in making and breaking codes.

problem icon

Building up to Coding

Stage: 1 and 2

This article describes the underlying mathematical ideas and skills involved in the important mathematical application of coding.

problem icon

Keeping it Safe and Quiet

Stage: 2, 3, 4 and 5

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

problem icon

James's Code Challenge

Stage: 2, 3, 4 and 5 Challenge Level: Challenge Level:1

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


The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice. More information on many of our other activities can be found here.
Copyright © 1997 - 2012. University of Cambridge. All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project.