Good at Math® Foundations Unit 2: Sorting & Classification

Good at Math® Foundations is an 8 unit Preschool-PreK math curriculum designed for classroom and homeschool learning environments. Each unit includes thoughtfully structured skill guides, hands-on teaching tools, visual supports, games, center materials, independent practice, no-prep printables, and extension activities to deepen understanding. The skill guides are intentionally designed for you, the teacher, to guide learners through each skill focus and include a clear lesson goal, materials list, skill description and rationale, connections to future learning in Good at Math® Kindergarten, whole group practice, centers, games, and shelf work, movement and fine motor integration, and play. Good at Math® Foundations was created by an experienced early childhood educator and refined through real classroom and homeschool use to ensure it meets the developmental needs of preschool and pre-kindergarten learners. All lessons and materials are designed using Universal Design for Learning to support a wide range of learners and learning styles while building a strong, joyful foundation in math.

Unit 2: Sorting & Classification builds foundational math thinking by helping students learn how to group, organize, and make sense of the world around them through sorting and classifying objects. Students begin by identifying what is the same and different, then progress into sorting by attributes such as color, size, and type before moving into more complex thinking like multi-group sorting, determining which objects don’t belong, and creating their own sorting rules. As students move through the unit, they develop the ability to compare, analyze, and explain their thinking while applying these skills in real-world and play-based contexts. This unit supports the development of early problem-solving, logical reasoning, and mathematical language while laying the groundwork for data organization, algebraic thinking, and classification skills. Within each skill focus, students are introduced to new concepts, practice them through whole group and movement-based experiences, engage in centers and shelf work, and demonstrate understanding through meaningful independent application.

With Good at Math® Foundations, you can take the guesswork out of your math block while confidently providing a developmentally appropriate, engaging, and thoughtfully sequenced introduction to early math skills, laying the foundation needed for future math success.

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Good at Math® Foundations will be a complete 8 unit curriculum, with a slated completion date of November 2026. The units will include: 
Unit 1: Spatial Awareness
Unit 2: Sorting & Classification
Unit 3: Patterns
Unit 4: Numbers 1-5
Unit 5: Numbers 6-10
Unit 6: 2D Shapes
Unit 7: Measurement & Comparison
Unit 8: Early Operations

If you would like to see this and other resources in action, please visit us on Instagram at @projectbasedprimary.