This workbook gives first graders lots of practice with subtraction and shows its relationship to addition.

This workbook gives first graders lots of practice with addition and the various concepts within the addition family.

Here's an arsenal of April Fools' Day fodder! Kids will be armed with facts, pranks and puzzles. Plus, they'll be tickled by goofy writing prompts, silly word problems and wacky reading comprehension.

Pay homage to our majestic, leafy companions with this series about trees. Kids can learn about the structure of trees, identify different leaf types and reflect on the many gifts that trees give.