Take any whole number between 1 and 999, add the squares of the digits to get a new number. Use a spreadsheet to investigate this sequence.
This problem in geometry has been solved in no less than EIGHT ways by a pair of students. How would you solve it? How many of their solutions can you follow? How are they the same or different? Which do you like best?
If you'd like to explore the game freely, without any nudges from us, choose this version.
This article explores the process of making and testing hypotheses.
A group of children are discussing the height of a tall tree. How would you go about finding out its height?
These squares have been made from Cuisenaire rods. Can you describe the pattern? What would the next square look like?
