Accessory pack lets your students explore a range of activities and experiences when used with your sensory tray (sold separately). Splatter, splash and spray liquids with the squiggle pipettes. Or, use the goo spreaders to manipulate viscous substances. Set also includes building cards, super topplers, colored rice, heart pipettes and sand scraper. Teaching guide provides entertaining ways to enhance your activities with unique ideas. Accessory pack is designed for children ages 3 and above.