Hape Sorting toys - Mr. Frog Stacking Rings 12m+Mr. Frog Stacking Rings (12M+) Mr. Frog helps toddlers learn colors, numbers, and sounds while stacking rings of different sizes onto the frog shaped base and listening to the tones produced. This developmental toy is perfect for engaging young minds. How to play: Stack the colorful rings onto the frog base in order Self Discovery: This educational toy for 12 month olds helps: Develop fine motor skills through grasping and placing rings Learn counting