How do you reduce, reuse and recycle at home and school?

REDUCE is an interactive system for general algebraic computations of interest to mathematicians, scientists and engineers.
REUSE is do use an item more than once.
RECYCLE is to use again an item that is recyclable like plastic bottles etc.
I reuse, reduce and recycle garbages in the house and school, we must throw them properly and keep the recyclable ones because we can still use them.