Okay, imagine you are going to your friend's house for a playdate. Your mom gives you a bag with toys and snacks in it. This bag is like a binas - it's a container that holds lots of useful things.
But instead of toys and snacks, a binas is a book that contains information about science and technology. It's a big book filled with charts, tables, and diagrams that helps people who want to learn about things like physics, chemistry, or biology.
For example, if you want to know the boiling point of water, you can look it up in the binas. Or if you want to know how to convert kilometers into miles, the binas has a chart for that too.
So, if you are curious about science and want to learn more about the world around you, a binas can help you!