Buku yang Dikarang by Osofsky

Funtastic Frogs™ Counting & Numbers, Grades K - 2

Funtastic Frogs™ Making Patterns, Grades K - 2

Funtastic Frogs™ Beginning Multiplication & Division, Grades K - 2

Funtastic Frogs™ Addition & Subtraction, Grades K - 2

Funtastic Frogs™ Making Graphs, Grades K - 2

Funtastic Frogs™ Balancing Numbers, Grades K - 2

Funtastic Frogs™ Measuring, Grades K - 2

Funtastic Frogs™ Fast Facts, Grades K - 2