Upper Secondary Big Button

Current

Logs By The Fire

You've probably seen the "log" button on your calculator, but do you know what it actually does? The resources below will help you to discover how the logarithm function works and how you can use it to solve problems. 
Summing to One link

Summing to One live

Stage: 5 Challenge Level: Challenge Level:1

This problem is a nice introduction that will give you a feeling for how logs work and what that button on your calculator might be doing.

Proving the Laws of Logarithms link

Proving the Laws of Logarithms live

Stage: 5 Challenge Level: Challenge Level:1

Here you have an opportunity to explore the proofs of the laws of logarithms.

Factorial Fragments link

Factorial Fragments live

Stage: 5 Challenge Level: Challenge Level:1

Here you have an expression containing logs and factorials! What can you do with it?

A Big Power link

A Big Power live

Stage: 5 Challenge Level: Challenge Level:1

Have you ever tried to work out the largest number that your calculator can cope with? What about your computer? Perhaps you tried using powers to make really large numbers. In this problem you will think about how much you can do to understand such numbers when your calculator is less than helpful!