Firefly & Fern

Angeline Sparagna Lopresti

Ages 4–8number conceptsmathematics

Michael Berenstain

Ages 3–7mathematicsproblem-solving

Wendy Wiseman, Sari Dajani, Jennifer Jesse

Ages 4–8math fundamentalsproblem-solving

Robin Wild

Ages 2–6countingnumber concepts

Roberta Bannister, Barbara Gregorich

Ages 4–8mathematicslearning

Muriel L. Feelings, Tom Feelings

Ages 4–8countingcultural exploration

Megan Atwood

Ages 3–7mathematicsnumber concepts

Angeline Sparagna Lopresti

Ages 5–8mathematicsnumber concepts

Alistair McIntosh, Barbara J. Reys, Robert Reys

Ages 6–12mathematicsproblem-solving

Bitter

Ages 5–12arithmeticproblem-solving