I have this in my toddler classroom. My kids love it! The younger ones have a harder time because the shape is difficult and the movement of the puzzle. It is a great work to have on the shelf to challenge all my students.
"Clean your kids toys in the dishwasher with vinegar! Use 1 - 2 c. (And recipe for spray to clean wooden toys and others that can't go in the dishwasher.) Via Lilac City Momma" great tip for the classroom toys