50 Hundreds Board Activities is a set of 50 double-sided activity cards for teaching math skills with the hundreds board. Topics include skip counting odd & even numbers counting and addition subtraction reasoning probability number bonds negative numbers factors multiples mental arithmetic multiplication remainders fractions percentages and prime numbers. 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.