For Business Studies this game gives a good foundation. Have you tried it?

https://exams.want2learn.com/learn-business-studies-through-games

If you are preparing for the IELTs Examination you need to learn some collocations and phrases.

In the IELTs writing prompt and the answer given here we have used certain collocations and phrases. It will be useful for you to understand the meaning of these and learn in what context you can use them. So some of them are selected and explained here.

wealth of information
A wealth of information is a large amount of information, especially information that is valuable or useful. It can be used in a sentence like this: “The internet provides a wealth of information on any topic imaginable.”

time-consuming
Taking a lot of time.
Here is an example of how it can be used in a sentence:

Writing a book is a time-consuming process.

Continue reading here - https://languages.want2learn.com/collocations-phrases

Mnemonics for learning Kilometer, hectometer, etc.

Do you feel difficulty in remembering the key units of mathematics in order? Not to worry, here is a tip to remember it in an easy way. First let us list out the units in terms of metre:

Kilometre, Hectometre, Decametre, Metre, Decimetre, Centimetre, Millimetre

Now let's take only the keywords:

Kilo, Hecto, Deca, ( ), Deci, Centi, Milli

Mnemonic:

King Henry Drank ____ Delicious Chocolate Milk

This ___ is for the measuring unit to be written like Gram, Litre, Metre etc. 

Other than that the prefix of the measuring units are all the same. 

Hope it helps 👍