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# Alien Counting

There is a lot to explore in this challenge!

Have you tried writing out numbers above 7 for each alien?

Can you find numbers that the aliens used to count the children in the classroom that look the same to the humans looking at the masks?

Do let us know what you discover.Please don't worry that your solution is not "complete" - we'd like to hear about anything you have tried.

Teachers - you might like to send a summary of your children's work.

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Age 7 to 11

Challenge Level

- Problem
- Getting Started
- Student Solutions
- Teachers' Resources

There is a lot to explore in this challenge!

Have you tried writing out numbers above 7 for each alien?

Can you find numbers that the aliens used to count the children in the classroom that look the same to the humans looking at the masks?

Do let us know what you discover.Please don't worry that your solution is not "complete" - we'd like to hear about anything you have tried.

Teachers - you might like to send a summary of your children's work.

Can you design a new shape for the twenty-eight squares and arrange the numbers in a logical way? What patterns do you notice?

In a square in which the houses are evenly spaced, numbers 3 and 10 are opposite each other. What is the smallest and what is the largest possible number of houses in the square?

Exactly 195 digits have been used to number the pages in a book. How many pages does the book have?