Program divided into fifteen topics: Fluently add and subtract within 20 -- Work with equal groups -- Add within 100 using strategies -- Fluently add within 100 -- Subtract within 100 using strategies -- Fluently subtract within 100 -- More solving problems involving addition and subtraction -- Work with time and money -- Numbers to 1,000 -- Add within 1,000 using models and strategies -- Subtract within 1,000 using models and strategies -- Measuring length -- Shapes and their attributes -- More addition, subtraction, and length -- Graphs and data.