abstract appearance artwork background children's play color coloration colored colorful colour coloured colourful malable modelling-clay multi-use oily petroleum-jelly putty-like soft surface surfaces tactile texture textured textures thick thin 1 2 3 addition arithmetic basic beginning child children class clay count counting education elementary game grade homework introduction kid kids kindergarten learn lesson math mathematics modelling number numbers numerals numerical order play play doh point preschool primary school schoolwork sequence shape student study subject subtraction teach teacher toy a ABC alphabet b beginner book c classroom english font letter letters marking read reading report card simple spell spelling think word