I got this great idea from www.mymontessorijourney.typepad.com/. I love that Blog by the way. You have to check it out. I have implemented most of her organizing ideas. Her setup was by the months of the school year. Each Fabric bin for each month of the school year. One bin was shared by August/September. In Spanish you teach by topics so my setup is by the topics I teach. For example: one bin is for Culture, one for the alphabet/school supplies, numbers/shapes/colors, animals, etc...
I purchased the shelves and bins from Target. In each bin I put things releated to the topics I am teaching. Here is an example of one bin.
My first bin is labeled with creative memories stickers of school supplies and the letters ABC as seen above. In there I have all of my alphabet flash cards, school supplies flash cards, props, and games related to these topics. Now when it is time to teach about school supplies or teach the ABC's, I know exactly where to find everything!
My bin labels are: ABC/School supplies, numbers/shapes/colors, foods, clothing/body parts, time/calendar/seasons, holidays, animals, culture, family/home.
I thought about a quick way to do this so you do not have to build the shelves by using 3 plastic bins carts. With 3 carts you have the 9 bins. For homeschooling parents, you can have a bin for math, one for language, one for culture, etc...