This award winning stacking blocks set is different from all other building blocks, because its blocks have see-through sides with children friendly pictures. Build a World - See-Thru Stories Blocks set features 4 transparent blocks with 4 illustrated scenes: farm, ocean, jungle and backyard. Mix and match these pictures nesting the cubes together and create endless stories! Build a World - See-Thru Stories Blocks by Alex Toys is a great toddler activity set. This nesting toy will help your little one to boost his/her motor skills, expand imagination, add more words to the vocabulary, improve eye-hand coordination, teach about shapes and sizes in the most entertaining form of education b fun game. See-Thru Stories Blocks from Educational Toys Planet is a quality imaginative building toy.