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Excel investigation: power crazy
When is 7^n + 3^n a multiple of 10? Use Excel to investigate, and
try to explain what you find out.
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Excel investigation: difference tuples
Use an Excel spreadsheet to investigate differences between four
numbers. Which set of start numbers give the longest run before
becoming 0 0 0 0?
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Excel investigation: Happy numbers
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.
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Excel investigation: target decimal
Use an Excel spreadsheet to approximate a decimal using trial and
improvement.
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Excel investigation: more beads
A heap of beads was shared out by a professional bead sharer. Use
the information given to find out how many beads there were at the
start.
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Excel investigation: Pascal multiples
This spreadsheet highlights multiples of numbers up to 20 in Pascal's triangle. What patterns can you see?
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Excel investigation: Pythagorean triples
Use Excel to find sets of three numbers so that the sum of the squares of the first two is equal to the square of the third.
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Excel investigation: the difference of two (same) powers
If you take two integers and look at the difference between the
square of each value, there is a nice relationship between the
original numbers and that difference. Can you find the pattern
using Excel?
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Developing the classroom culture: using the Dotty Six activity as a springboard for investigation
This article suggests how to dig deeper into who answers questions in your classroom using the game Dotty Six.