Explore length, mass, temperature and capacity in both customary and metric scales. Features cards with vocabulary, abbreviations, units, rulers and equivalencies. Additional cards include bricks for non - standard measurement and 41 objects to measure - turn objects over to self - check. Chart includes 125 double - sided, write - on/wipe - off cards total, 10 plastic 12" rulers and Activity Guide Flame - retardant nylon chart with grommets features 3 storage pockets and measures 40.5" L x 31.5"H. Grades K - 3.