Definition: The rate of occurrence of anything; the relationship between incidence and time period.

Alright class, settle down, let’s take a look! That definition you read – “the rate of occurrence of anything; the relationship between incidence and time period” – it can seem a little tricky, I know. But don't worry, we'll break it down nice and slow. Let's talk about frequencies . Think about it like this: Imagine you’re counting raindrops falling on your windowpane. You count one drop every second. That’s a frequency – the rate at which those drops are happening! It’s how often something occurs. Now, let's say you count for five seconds and get ten drops. The frequency would be ten drops per five seconds - or, simplified, two drops per second. You see? We’re looking at how many things happen in a certain amount of time . The dictionary is being quite precise – “incidence” just means how often something happens, and "time period" tells us over what length of time we're counting. Frequencies can apply to all sorts of things, not just raindrops! Think about: A radio playing music - the frequency of the sound waves. A lightbulb flickering - the frequency of its on-off cycles. Even your heart beating – a rhythmic frequency! It’s all about counting and measuring how often something repeats itself. Does that make sense, class? Do you have any questions? Let's discuss!