Wooden Human Body Digestive System Jigsaw Puzzle with knob is a great way to help them learn about human internal body functionality. This makes a great gift for kids who are interested in science or for those who are attending a science-themed birthday party. Teach your kids about the human body with this fun and interactive Digestive System. The large and colorful visuals make it easy for kids to understand how the digestive system works. This vibrant and colorful poster is a great way to help kids learn about the human body and how the digestive system works. Plus, it makes a great gift for kids who are interested in science or health. Wooden Geometric Shape & Color Puzzle is a fun and educational toy that helps kids learn while they play. Made with safe, non-toxic materials, this puzzle is perfect for ages 2-6. The colorful geometric blocks are easy to grasp and stack, making it a great brain-stimulating toy for your little one.