Students master basic fraction concepts with understanding by combining physical models with pictorial and notational representation! Powerful mental images develop through modeling fractions and their relationships, equivalence, order, sums, differences, etc. Quality stock pattern blocks add fourths and twelfths to the standard halves, thirds and sixths of hexagons, tripling fractions that can be modeled! including 48 activity sets, 1150 quality stick pattern blocks, 115 number squares. Excellent for individual and group use.