Ok kiddo, let me explain what Apache Taverna is.
Have you ever made a to-do list? It's a list of things you need to do in order. Well, Taverna is a tool that helps scientists and researchers make "to-do" list of computer tasks. These computer tasks are very important in science and research because they help scientists make sense of complex data.
For example, imagine you are a scientist trying to understand how different foods affect people's health. You need to collect a lot of data like how much people eat, how much they weigh, and how healthy they are. You can collect all of this data using computer programs. Taverna helps you make a "to-do" list of these computer programs so that you can run them in order, one after the other.
Taverna also helps you keep track of the results you get from the computer programs. This way, you can see whether your data makes sense or not.
So, to sum it up, Apache Taverna is a tool that helps scientists make computer programs that collect and analyze data. It helps you keep track of all the steps you need to take and the results you get from those steps. It's like making a to-do list for your computer programs. Cool, right?