50 Bead String Activities is a set of 50 double-sided activity cards for teaching math skills with rekenrek bead strings. Topics include: counting numbers teen numbers bigger and smaller Ty numbers visualizing numbers less than and greater than estimation groupings addition subtraction place value compliments big numbers rounding halving doubles skip counting multiplication division remainders negative numbers proportion ratios fractions percentages and equivalences. The front side provides teaching objectives resources used and procedure. The other side provides visual examples. Math manipulatives used effectively throughout and presented in clear photography. Contains 50 double-sided activity cards and a contents card that can act as a check off list.