I believe Acrilu was a Brazilian company that produced educational toys, and though I have not been able to find out much about it, I really love the design of this one. Contained within the long slide top box with terrific orange top are five sets of sequential tiles, six tiles per set, which take some thought to arrange into their proper orders! I believe the images are screen prints on cardboard, mounted to chipboard backs. Pretty great graphics I think and numerous levels of teaching going on, as we follow children getting dressed in the morning, falling off a bike, heading out sledding, and ready for bed, plus tracking the effort it takes for the mother to put dinner on the table!
The box is large enough to hold six sets of tiles, so I'm guessing one set is missing. Otherwise, all complete and in great vintage condition, Box measures 14 3/8" long x 5 1/2" deep x 1 1/2" tall; tiles are 2 3/4" x 4 1/8" x 1/8" each.