Patterns are everywhere in mathematics — in multiplication tables, in geometry, in algebra — and the ability to recognize, continue, and create patterns is foundational algebraic thinking. Preschool pattern work begins with simple AB patterns (red, blue, red, blue) and grows to AABB, ABC, and ABBC patterns. Children who develop strong pattern sense in preschool are better prepared for the algebraic thinking that formal mathematics will require.

Pattern Materials

• Attribute blocks (shapes in different colors and sizes)
• Colored counters or bears
• Shape stamps and ink pads
• LEGO or DUPLO bricks in colors
• Sticker dots in two or three colors

Pattern Progression

• AB pattern: Red, blue, red, blue, red, blue... "What comes next?"
• AABB: Red, red, blue, blue, red, red, blue, blue...
• ABC: Red, blue, yellow, red, blue, yellow...
• Growing patterns: 1 block, 2 blocks, 3 blocks... (not repeating, but increasing).

Pattern Language

• "What comes next in the pattern?"
• "What is the rule for this pattern?"
• "What would be the 10th piece in this pattern?"
• "Can you make the same pattern using sounds? (clap, stomp, clap, stomp...)"

Frequently Asked Questions

How do I know when a child is ready to move from AB to more complex patterns?

A child is ready to advance when they can: (1) correctly extend a given AB pattern at least 4 more units, (2) identify the pattern rule without prompting, and (3) create their own AB pattern independently. These three milestones — extend, explain, create — apply at every level. Move to AABB when AB is fully consolidated; move to ABC only after AABB. Rushing progression creates shaky foundations; solid consolidation at each level makes the next level much easier.

Related education: Build Graphs with Blocks | Sort Objects by Weight | Roll Dice and Build