Product Name: Pythagoras: Educational Fun! Ball Coaster Manufacturer: People One plate is missing. A sticker is attached to the blue curved piece (second image). Product Description [Pythagoras(R)] "Playable," "Buildable," and "Nurtures Inspiration" from 1.5 years old. Around 1 year old, children begin to look for their first building blocks. This set includes basic parts that are the foundation of Pythagoras play, making it recommended for children starting with Pythagoras. If you like playing with balls, both ball dropping and coasters are fun. An introductory set that's easy to build and play with. ● Perfectly sized for little hands, safe design. ● Easy to reassemble with magnets, includes 5 types of NEW "coaster parts." ● Includes a "Step-Up Educational Play Guide" with 10 ways to play that develop logical thinking skills. ● Includes "guide parts" for easily creating three-dimensional boxes. ● Can be played with in combination with the Pythagoras series.