Hold a while (you may close your eyes) and remember your few decisions(purchasing TV/mobile/home appliance/book or anything). You will notice that you always wanted to see the product before deciding if you should go ahead or not. Now think why you wanted to do? Its for understanding of the product. A real product is best for your understanding.
If not, you want to see the model or any graphical system for the same. This helps in visualisation of the product.
Every time, the core is wish to understand. Understanding can happen via real experience or via .
Do you think, a students also desires same? If yes, you are at right place.
Pair students and give some money (coins/notes) and some low price items (eatables/pencil etc). Let each student purchase and sell to others
Take child to the shop and help them pay bill himself for his own items
For multiplication, ask kids to purchase/sell two or more units of an item (for example, two pencils)
Every door opens to 90 degree.
Open door partial and then ask child to measure how much it is open
Divide the full 90 degree to 10/90 parts and ask them to count. This will give him first time feeling of angular measurement.
Gurukul system in india