Open up the paper and cut 2 strips of paper (1/4 of a sheet width-wise). Weave into the slits as shown below.
This foldable is usefull for organizing concepts that have many parts. Ex: landforms, forms of energy, Sources of energy, Physical properties.

You could also use the contrasting colors to have students write/draw cause and effect situations. 
 
 
The above picture is obviously a spanish example, but think of the worksheet below as a grid filled with pictures of plant and animal structures. Students have to write the function of the structures in sticky notes and place them on top of the picture. 


 
 
Flip books are great for organizing groups of ideas that are related to each other. Students are able to see the big picture and have access to the details. 

To make this foldable, first decide how many tabs you will need. Round up to the nearest even number and divide by 2. That's how many pieces of paper you will need. Do not include the top or title flap in your tab count. Lay the papers on top of each other about a thumbs width higher for each page. Fold the stack in half and staple the top 3 times.