Or search by topic
How many grains of rice would there be on the 8th square?
How many grains would you need altogether in order to fill up to the 15th square?
Estimate how many grains you would need in total to
fill the entire board in this way. Explain your thinking.
Perhaps Sissa was cleverer than the king thought!
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
Play the divisibility game to create numbers in which the first two digits make a number divisible by 2, the first three digits make a number divisible by 3...
Imagine you have an unlimited number of four types of triangle. How many different tetrahedra can you make?